Index: E:/Source/OpenSource/ccnet-svn-trunk/project/core/util/IFileSystem.cs
===================================================================
--- E:/Source/OpenSource/ccnet-svn-trunk/project/core/util/IFileSystem.cs	(revision 3607)
+++ E:/Source/OpenSource/ccnet-svn-trunk/project/core/util/IFileSystem.cs	(working copy)
@@ -9,5 +9,8 @@
 		TextReader Load(string file);
 		bool FileExists(string file);
 		bool DirectoryExists(string folder);
+		void CreateDirectory(string folder);
+		void DeleteDirectory(string folder);
+		void DeleteDirectory(string folder, bool recursive);
 	}
 }
\ No newline at end of file
Index: E:/Source/OpenSource/ccnet-svn-trunk/project/core/util/SystemIoFileSystem.cs
===================================================================
--- E:/Source/OpenSource/ccnet-svn-trunk/project/core/util/SystemIoFileSystem.cs	(revision 3607)
+++ E:/Source/OpenSource/ccnet-svn-trunk/project/core/util/SystemIoFileSystem.cs	(working copy)
@@ -79,5 +79,20 @@
 		{
 			return Directory.Exists(folder);
 		}
+
+		public void CreateDirectory(string folder)
+		{
+			Directory.CreateDirectory(folder);
+		}
+
+		public void DeleteDirectory(string folder)
+		{
+			Directory.Delete(folder);
+		}
+
+		public void DeleteDirectory(string folder, bool recursive)
+		{
+			Directory.Delete(folder, recursive);
+		}
 	}
 }
\ No newline at end of file