your very lucky toast.I have a semperon 3000+,1. 8ghz,1 gig ram,BFG 5500 OC 256 MB 8x agp,and at the lowest settings,my game is very laggy.Now on the readme txt it has a listing of the vid cards it supports and mine isnt one of them.Funny thing is i have a compaq laptop and its specs are amd turion 64 x2,! gig ram (shared),256 gforce 6150, and at the lowest settings,it runs smooth.But as soon i hit those nebulae,it gets real choppy.I have an old rig my sons uses.Its a amd athlon fx but the vid card he has is a gforce ti 4400 128 mb and it crashes when it runs legacy.Read from what u have toast of your old rig,im gonna try ti switch vid cards on tha told rig and see what happens.You think the vid card (bfg 5500) tha tis not listed as one of the supported card could be the culprit?Or would be both the vid card and processor?Any help woukd be helpful,Thanks.