no i didnt download it 
but i thought theres a way to just move it (cuz i dont wanna mess around with my friend that is the owner of gta sa and he just didnt play gta before so i borrowed it -.-) 
but if theres no other way... ok... 
just wanted to try it - couldnt you just export HKEY_LOCAL_MACHINE\SOFTWARE\Rockstar Games and maybe HKEY_CURRENT_USER etc... does anyone tried it?