Index: src/Boo.Lang.Compiler/Steps/EmitAssembly.cs
===================================================================
--- src/Boo.Lang.Compiler/Steps/EmitAssembly.cs	(revision 2033)
+++ src/Boo.Lang.Compiler/Steps/EmitAssembly.cs	(working copy)
@@ -478,6 +478,11 @@
 				return;
 			}
 			
+			if (((IMethod)GetEntity(method)).IsPInvoke)
+			{
+				return;
+			}
+			
 			MethodBuilder methodBuilder = GetMethodBuilder(method);
 			if (null != method.ExplicitInfo)
 			{
@@ -1184,8 +1189,8 @@
 		}
 
 		private void EmitLogicalNot(UnaryExpression node)
-		{
-			Expression operand = node.Operand;
+		{
+			Expression operand = node.Operand;
 			operand.Accept(this); 
 			IType typeOnStack = PopType();
 			if (IsBoolOrInt(typeOnStack) || EmitToBoolIfNeeded(operand))
@@ -3730,6 +3735,11 @@
 			{
 				attributes |= MethodAttributes.NewSlot;
 			}
+			if (((IMethod)GetEntity(method)).IsPInvoke)
+			{
+				attributes |= MethodAttributes.PinvokeImpl;
+				//was already made static earlier
+			}
 			attributes |= GetMethodAttributesFromTypeMember(method);			
 			return attributes;
 		}
Index: src/Boo.Lang.Compiler/Steps/ProcessMethodBodies.cs
===================================================================
--- src/Boo.Lang.Compiler/Steps/ProcessMethodBodies.cs	(revision 2033)
+++ src/Boo.Lang.Compiler/Steps/ProcessMethodBodies.cs	(working copy)
@@ -749,9 +749,14 @@
 			Visit(method.ReturnType);
 			Visit(method.ReturnTypeAttributes);
 			
-			if (method.IsRuntime)
+			bool ispinvoke = ((IMethod)GetEntity(method)).IsPInvoke;
+			if (method.IsRuntime || ispinvoke)
 			{
 				CheckRuntimeMethod(method);
+				if (ispinvoke)
+				{
+					method.Modifiers |= TypeMemberModifiers.Static;
+				}
 			}
 			else
 			{
@@ -5607,14 +5612,14 @@
 				}
 				return _EnumeratorItemType_Constructor;
 			}
-		}
-
-		public bool OptimizeNullComparisons
-		{
-			get { return _optimizeNullComparisons; }
-			set { _optimizeNullComparisons = value; }
-		}
-
+		}
+
+		public bool OptimizeNullComparisons
+		{
+			get { return _optimizeNullComparisons; }
+			set { _optimizeNullComparisons = value; }
+		}
+
 		#endregion
 	}
 }
Index: src/Boo.Lang.Compiler/TypeSystem/ExternalMethod.cs
===================================================================
--- src/Boo.Lang.Compiler/TypeSystem/ExternalMethod.cs	(revision 2033)
+++ src/Boo.Lang.Compiler/TypeSystem/ExternalMethod.cs	(working copy)
@@ -47,6 +47,8 @@
 
 		int _isExtension = -1;
 		
+		int _isPInvoke = -1;
+		
 		internal ExternalMethod(TypeSystemServices manager, MethodBase mi)
 		{
 			_typeSystemServices = manager;
@@ -82,6 +84,20 @@
 			}
 		}
 		
+		public bool IsPInvoke
+		{
+			get
+			{
+				if (-1 == _isPInvoke)
+				{
+					_isPInvoke = MetadataUtil.IsAttributeDefined(_mi,  Types.DllImportAttribute)
+						? 1
+						: 0;
+				}
+				return 1 == _isPInvoke;
+			}
+		}
+		
 		public IType DeclaringType
 		{
 			get
Index: src/Boo.Lang.Compiler/TypeSystem/IEntity.cs
===================================================================
--- src/Boo.Lang.Compiler/TypeSystem/IEntity.cs	(revision 2033)
+++ src/Boo.Lang.Compiler/TypeSystem/IEntity.cs	(working copy)
@@ -294,10 +294,15 @@
 			get;
 		}
 
-		bool IsExtension
-		{
-			get;
+		bool IsExtension
+		{
+			get;
 		}
+		
+		bool IsPInvoke
+		{
+			get;
+		}
 	}
 	
 	public interface IConstructor : IMethodBase
Index: src/Boo.Lang.Compiler/TypeSystem/InternalMethod.cs
===================================================================
--- src/Boo.Lang.Compiler/TypeSystem/InternalMethod.cs	(revision 2033)
+++ src/Boo.Lang.Compiler/TypeSystem/InternalMethod.cs	(working copy)
@@ -56,7 +56,7 @@
 		protected List _labelReferences;
 		
 		protected List _labels;
-		
+				
 		internal InternalMethod(TypeSystemServices typeSystemServices, Method method)
 		{
 			_typeSystemServices = typeSystemServices;
@@ -93,6 +93,26 @@
 			}
 		}
 		
+		public bool IsPInvoke
+		{
+			get
+			{
+				IType dllimporttype = _typeSystemServices.Map(Types.DllImportAttribute);
+				foreach (Boo.Lang.Compiler.Ast.Attribute att in _method.Attributes)
+				{
+					IConstructor constructor = TypeSystemServices.GetEntity(att) as IConstructor;
+					if (null != constructor)
+					{
+						if (constructor.DeclaringType == dllimporttype)
+						{
+							return true;
+						}
+					}
+				}
+				return false;
+			}
+		}
+		
 		public IType DeclaringType
 		{
 			get
Index: src/Boo.Lang.Compiler/TypeSystem/Types.cs
===================================================================
--- src/Boo.Lang.Compiler/TypeSystem/Types.cs	(revision 2033)
+++ src/Boo.Lang.Compiler/TypeSystem/Types.cs	(working copy)
@@ -24,14 +24,14 @@
 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 // THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#endregion
-
+#endregion
+
 namespace Boo.Lang.Compiler.TypeSystem
 {
-	using System;
-	using System.Collections;
-	using System.Text.RegularExpressions;
-	using Boo.Lang.Runtime;
+	using System;
+	using System.Collections;
+	using System.Text.RegularExpressions;
+	using Boo.Lang.Runtime;
 
 	public class Types
 	{
@@ -116,6 +116,8 @@
 		public static readonly Type DuckTypedAttribute = typeof(Boo.Lang.DuckTypedAttribute);
 
 		public static readonly Type ExtensionAttribute = typeof(Boo.Lang.ExtensionAttribute);
+		
+		public static readonly Type DllImportAttribute = typeof(System.Runtime.InteropServices.DllImportAttribute);
 
 		public static readonly Type ModuleAttribute = typeof(Boo.Lang.ModuleAttribute);
 
Index: src/Boo.Lang/Resources/strings.txt
===================================================================
--- src/Boo.Lang/Resources/strings.txt	(revision 2033)
+++ src/Boo.Lang/Resources/strings.txt	(working copy)
@@ -75,7 +75,7 @@
 BCE0073=Abstract method '{0}' cannot have a body.
 BCE0074='self' cannot be used outside a method.
 BCE0075='{0}' is a namespace. Namespaces cannot be used as expressions.
-BCE0076=Runtime methods must have an empty body.
+BCE0076=Runtime and PInvoke methods must have an empty body.
 BCE0077=It is not possible to invoke an expression of type '{0}'.
 BCE0078=A method reference was expected.
 BCE0079=__addressof__ builtin function can only be used in delegate constructors.