[Flipside]

Well, the only changes I'd suggest as I said before is that the Graphics Card might need changing to fully take advantage of the SCP, though you will be able to play SCP on it for 6-12 months it takes to upgrade if needed.
Memory is ok, though Freespace is a thirsty game, it wouldn't hurt to throw an extra 256Mb+ in there at some point, but the computer will function adequately without it.
The only other major concern is Hard Drive Space, make sure you've got around 80Gig+ if possible, especially if you are running XP, which I do, and it runs Freespace fine, regardless of any other faults it may have.

Flipside

[Bobboau]

more memory would be good, but I would still say getting a better video card should be your top priority

[Trivial Psychic]

For whoever is performing any upkeep (or planned upkeep) of the SCP home page, it might be a good idea to display a listing of minimum system requirements for all features, as well as a recommended system specs for full enjoyment.  Or perhaps, when it comes to which video card you recommend, have a grid that displays chipsets along the top, features along the left, and a rating like, unsupported, partial functionality, fully supported, etc.  Obviously, these specs would need to be updated from time to time to include new features in FSO, and new hardware becoming available.  Just an idea.

Later!