Resident evil 5 xlive initialize problem

Do you use Windows xp??? Because Resident evil 5 encaunters problems on XP, I use windows 7 x64, by the way i got Phenom II 550 Black Edition @3.7 GHz, Gigabyte GA-MA790XT-UD4P, 4GB Kinkston Hyper X DDR3 at 1600 mhz and MSI RADEON R3870X2 1 GB VRAM, it works perfectly, over 80 FPS, by the way, i hate this Xlive ***, DO ANYBODY HAVE xliveless like for GTA 4, i want to manage my save and i lost savegame becase i installed windows 7 x64, i was usinfg x86 yesterday and installed x64 and because of this crap Xlive, i can't use my old save to continue the game where i stoped????

And, you my friedn, TRY WINDOWS 7 x64 or x86, it will work!!!