Better link. Make sure you click the 'Please click here to check the current link...' link:
http://66.218.69.11/search/cache?ei=...icp=1&.intl=us
Ah, since your iMac is new you'll be on Leopard (unless you got it 'pre owned' he he). I'd imagine by the end of this month your printer will be supported, but I'm not 100% sure about that.