If this card doesn't work as RAID I would do one of the following, in order of cost:
1) Try the card in non-RAID as extra IDE connectors if you need the extra connectors. If you don't then junk the card.
2) Spend the ~$45 on a Highpoint card.
3) Get a new mobo with RAID, looks to be $87+.
4) Get a new mobo with RAID - an Athlon64 socket 754 mobo. $90-160 mobo and A64's start at $185 for a 2800+. If you have PC3200 RAM then you're golden, if you have only PC2700 or less it will run at a slower speed, or Corsair VS cas=2.5 RAM is $82 per 512mb stick. A64's don't run "dual-DDR" so one stick is fine for starters, although I highly suggest 1gb.
The last two might have possibilites for selling parts, building a second PC, or a PC for the wife.