hey ppl i have Amd Athlon 2400+ 2.0 ghz processor...i m using windows xp professional sp2...1 gb ram...the sound card and vga card are built in on board...i have recently injected a 128mb geforce fx5500 graphics card but it is not working properly...all drivers r uptodate....i have reinstalled my windows and all drivers but of no avail...sometimes when i run the game it halts the computer and sometimes says this game will now run in software mode..it doesnt even runs in d3d ...plz help