SP1 Update: A lot of users report that this hack is broken after Windows 7 SP1. If you have SP1, try running the hack and then replacing termsrv.dll and rdpclip.exe with the latest versions from a Windows 7 SP1 PC that has these features. Here is a ZIP file with rdpclip.exe and termsrv.dll from Windows 7 Ultimate 64-bit SP1. You'd need to run the hack, and then copy both files from the ZIP into your C:\Windows\System32 directory (note: your system drive may not be C:\). that may do the trick.
Finally found a link to (what appears to be) a reliable forum for the Windows 7 Home Premium desktop hack. The forum is here.
For the brave, a direct link to the file.
Sound off if it works for you, since I don't have Windows 7 Home Premium.
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