So what you got to do is:
1. Install the normal drivers for XP
2. Copy your printer (HP PSC 1215)
3. Delete the original printer
4. Change the copy's name to the original one
5. Print a test page
And that's all. Don't forget to plug in!
BTW Vista's as good as XP and every dumbass can learn it, so please don't say that Vista sux.