Windows XP - Concurrent RDP sessions

We could make XP to allow concurrent RDP sessions, below are the steps

- Replace the termsrv.dll in the following paths %windir%/system32/dllcache & %windir%/system32 with the dll found in the below link. Link also explains the steps in detail,
http://alonbilu.wordpress.com/2008/05/17/enabling-multiple-concurrent-remote-sessions-on-windows-xp-sp3-patched-file-included/

- Change the registry settings as below,
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Terminal Server\Licensing Core]
"EnableConcurrentSessions"=dword:00000001
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"EnableConcurrentSessions"=dword:00000001
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"AllowMultipleTSSessions"=dword:00000001
 
- You can set the number of connections, go to gpedit.msc > computer configuration > windows components > Terminal services > limit muber of connections (set to the number you want).
 
- If you are using RDP, ensure you do all these in safe mode.
 
- Restart the system.