Well, I don't use it for MOHAA but I have a:
Celeron 333MHz
96MB Ram
2 MB integrated 3d card
I had the Bigfoot drive also but I replaced it with a 20GB long ago.

I kept it so I could keep some of my older games that don't work well (or don't work at all) under Windows 2000

I use a P4 1.5 Ghz
512 MB Ram
32MB Geforce II for MOHAA, IL2, and other new games.