I would throw an OCZ Vertex 3 240 gig SSD ( any sata II or sata III OCZ SSD ) in one of my junk PCs or give it away , if someone gave me one......then I would go get a Crucial M4 256 gig SSD , more reliable less problems....... I would not sell the OCZ to someone else, just give it away with a warning, for I would not want to sell someone a possible eventual problem...........
Why not opt for an ATI Videocard that can do 1 to 6 monitors ( er eyefinity )........ should easily handle the 3 monitors you are wanting......... and also, over at newegg , they have been offering these combo's where you can get a bundle of 3 monitors & VC at a discount.... ( or opt for a NVidia Video Card that is capable of 3 monitors ???? do they make one capable enough to produce good FPS across 3??? )
but you should try and match up your monitors ----- go with 3 Acer's or go with 3 of the samsungs............ if you can not find them new, buy em refurbished , they will still work....... then sell what ever you got left over , or keep it for emergency back up........
you never posted how much money she gave you or you took, to throw away/ blow / spend ????
save some to go party on ........... don't forget that

TC