Sharing a Printer between a Mac & PC

I'm trying to share my printer thats currently hooked up to my iMac with a laptop running Windows Vista. I currently share Internet via a Wireless network.

I've enabled printer sharing in the System Preferences on my Mac but Windows is not finding the printer when I try to add a new Printer in Vista.

Any thoughts? Is there another setting I'm missing somewhere?

thanks!

I posted this for someone just last night wanting to go the other way (PC-Mac).
http://www.myfirstmac.com/index.php/mac/articles/1-printer-for-your-mac-and-pc

Download Bonjour for Windows and after that its all go-go.

Does bonjour only work with the airport extreme base station? or does it work with any router?

Bonjour worked perfectly. Thanks for the advice!

(and to answer your question shahvik, it seems to work with any router. I had no problem with my Belkin)