Newbie: Need help on printing to XP shared printer

Bear with me please. I read tons of articles on this but somehow as a newbie to MAC (girlfriends sick daughter), I am missing something. 10.5.2 Leopard

Currently, she can print directly if we plug in the HP Deskjet printer directly via USB to the MACBook. No problem.

When we first got the MACBOOK I tried setting up the MACBOOK wirelessly to recognize the workgroup where the printer was attached via USB to the Windows XP PC. However it printed out garbage since I did not know there was a difference between XP printing and MAC (Gutenberg/gimp printing/drivers).

Now I know there is a difference.

But in reading various instructions, I no longer can find how to connect the MAC to the Windows workgroup. Note we do have a printer set up currently as USB-HP Deskjet on the Macbook (not sure I need to delete it yet).

I went to System Preferences on MACBOOK and clicked on printers, more printers. In the drop down box was CANON, APPLETALK, IP HP printing and Firewire. There was no WINDOWS selection as I saw in other online web instructions.

So not sure how to proceed to
1. Connect to workgroup (click on what exactly), step by step please!!
2. Add correct printer



Thanks so much in advance. Fiancé's kid has had her cancer recur in a different place and someone was nice enough to buy her a MACBOOK as a gift.

Sincerely
Peter

I hate to break it to ya, but windows does not allow macs to access its shared printers, as a matter of fact, the macs will not even see the printers. It sucks, yeah, because i have two windows and two macs and since the printer is connected to my windows desktop, i cant print from the macs.

Have you tried Bonjour for Windows?