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Terminal Server Patch

There's a nice patch for WindowsXP Pro SP3 to enable concurrent RDP sessions. For your (and my) convenience, here are the files again:

$ ls -lgo termsrv.* 
-rwxr--r-- 1 295424 2010-08-26 15:47 termsrv.dll
-rwxr--r-- 1 295424 2008-04-13 17:12 termsrv.bk1

$ md5sum termsrv.*
56f4867bae6fd78e5365a3a7afa59c82  termsrv.dll
ff3477c03be7201c294c35f684b3479f  termsrv.bk1
After patching termsrv.dll (and backing up the original, and escaping Windows File Protection), we still have to add a new registry key:
  HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\Licensing Core\
  EnableConcurrentSessions=1 (DWORD)
Reboot, and we should be done.