I just installed FsOne on a Viao 1.8 P4, 1gig, ATI 128 meg All-in-One. It installed first try other than the controler would not calibrate until I installed the first patch. Have very little time on it yet (darn work anyway), but so far it has been glitch free.
I must say though, the graphics are not quite what I thought they would be. Not bad, but not earth shattering either. Once I changed views only to find the wing of the plane through the pilots legs. Ouch.