Do yourself a favour and check out GOG.com.
GOG (Good Old Games) specializes in, you guessed it, re-releasing good ol’ games for XP and Vista.
A few highlights:
- Great, classic games
- DRM-free
- Low prices
- XP/Vista compatible
Once in a while I find something worthy and I don’t mind plugging them at all.
You can find out more at their wikipedia entry.