I am running win xp pro on AMD Athlon(tm) XP2100 running at 1.73ghz . Now when i try to use my nivida 64 mx 440 graphic card it freezes the screen and i have to go into safe mode to disable it.I have installed the drivers that came with the card and it does tell me that they are not "digitally signed" where can i get these DIGITAL DRIVERS? I have visited the nivida web site but i cannot find the drivers there!!.