Just found this on a random website:
Download an "OLD" Version of GameGuard
Extract the old GameGuard files to the GameGuard Folder (NOTE: ALWAYS back-up the original files -just in case)
Select all GameGuard files in the folder (including the hidden one)
Right-Click on any of the files-> Then click Properties
Select Read Only, then hit OK
Now go to google and download PC Protect
Install PC Protect
Patch PC Protect to unlock full version
Select all the GameGuard files
Right Click on any of the files-> Mouse over PC Protect (this is only available after you install PC Protect) ->Click on Lock (in all 3 tabs select "Read-only") and hit OK
Notes
You must have PC Protect running at all times, or the GameGuard will kick you out of the game.
Anybody cares to try?