hmm I just built a new system consisting of a gigabyte ga-g1975x mb and Pent D 820 cpu running win 64 bit bf2 and SF installed fine from cds just got a error message stating that this game has only ben tested for 32 bit OS's I rember reading on eiather eas forums or totalbf2.com that EA has no plans on releasing a 64bit version due to the fraglity of the engine but I cant see why they would not release a patch for the installer my only sugestion is find a frined wit hte cds and borrow them . your install key should work