This is a .theme were talking about, look at this "official" theme by Microsoft. It does not have a backslash in that area of the .theme http://go.microsoft.com/fwlink/?LinkID=75078 ; Copyright © Microsoft Corp. 1995-2006[Theme]DisplayName=Zune; My Computer[CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D}\DefaultIcon]DefaultValue=%WinDir%explorer.exe,0; My Documents[CLSID\{450D8FBA-AD25-11D0-98A8-0800361B1103}\DefaultIcon]DefaultValue=%WinDir%SYSTEM32\mydocs.dll,0; My Network Places[CLSID\{208D2C60-3AEA-1069-A2D7-08002B30309D}\DefaultIcon]DefaultValue=%WinDir%SYSTEM32\shell32.dll,17; Recycle Bin[CLSID\{645FF040-5081-101B-9F08-00AA002F954E}\DefaultIcon]full=%WinDir%SYSTEM32\shell32.dll,32empty=%WinDir%SYSTEM32\shell32.dll,31