How to wirelessly print to a HP printer hooked up to a windows pc

[ILOVEMYMBP2.2g]

I was just wondering if anyone knew of any websites or knew yourself how to print to Hp deskjet printer that is hooked up to a windows pc. I would love to print from my macbook pro to my printer that is downstairs wirelessly. My printer is hooked into my windows xp pc and then i have have a router hooked up to the pc. Ive tryed i just cant figure it out. Thanks

 

[mad jew]

Mate, check this out.

 

[gsahli]

mad jew is right for the setup, but there are also issues with driver. The HP-provided driver won't work for network printing - it was written to only support USB. (HP does provide network drivers for non-postscript printers that include built-in ethernet or wireless - the more expensive models). Most models are supported by Gutenprint or hpijs + ghostscript, found here:
http://www.linux-foundation.org/en/OpenPrinting/macosx

(Gutenprint is an update of the Gimp-Print version included in OS X.)

Here's a guide for setup:
http://www.ifelix.co.uk/tech/3015.html