Why'd you make 2 threads?
You've got to give a bit more information than that. There's a multitude of things that might have gone wrong, so you need to be specific.
Are you playing the German version of the game?
When you started the game, was the gamespy logo replaced with the Gentlemen logo?
Did you install any additional mods (the ones packaged with GOTR and any you downloaded yourself)?
Have you tried running the game in compatability mode (I think XP SP3 or Vista work best, from experience)?
When you install it, make sure you put the custom patch files in the SR2 root folder, where SR2_Pc.exe is and all that.