ill muck about with my vanilla install and tell you
EDIT - ^ No lower than 512 to test it on here, and the 512 machines at school with shared graphics do it fine (Just!), we have some POS pc's there as well which im working on putting LFS on, although no idea on what they have (except a 2100 Athlon)
with XP as your OS 512mb is probably best as windows is ram hungry. more ram will help you multi-task better & boost the overall performance of your pc?
some games are'nt happy till you get a gig of ram, thankfully LFS is not one of them.
I used to have a amd xp 2200+ not O/C with 256 ram and a fx5200 256mb, and i would run lfs without a problem. THe only down side is that i when i was at the back of the grid with 20+ cars i would get 12-15 fps... i cannt remember if was that exacly amount but if wasnt it was very very close to it.
I guess it all depends on whether you have Norton Internet Security Suite installed or not. XP can barely run on 128MB (with AV etc) so I would say 256MB minimum.
BF2 can take the p**s out of any pc when it wants to it's just unbelieveable how much pc resources it takes to run bf2 even me crap pc can handle can it has the lowest quality of cpu's and gfx cards there is (pc specs below near bottom of page)
Welcome back James. I look forward to seeing you on the track with your still shiny LFS licence. You're already on my buddy list, so maybe I'll catch you on track.
But then I have nearly 200 people on my buddy list, yet I rarely meet them online But at least I have the option of always knowing where a good race is, even if actually having the time to play LFS is rather harder.
Your PC is kinda out dated though, i would not even attempt to run BF2 with those specs. mainly the (9250). that card is from two generations ago and is the low end model.
Considering I can run BF2 on a GeForce 6200 (very much a budget card) at medium detail a Radeon x1300 shouldn't have any problems with it at all.
Back onto topic: I had LFS running on 192MB RAM at one point, was slow as hell though. I reckon that was more to do with the CPU than anything else though, was on an Athlon 1300MHz