Newbie with a Canon T1i

I'm new to the whole picking lens and what lens are compatible with my camera. So I need some help. Does anyone know if the Sigma 10mm Fisheye Lens is compatible with the Canon Rebel T1i? Any help would be really appreciated, thanks.

http://www.amazon.com/Sigma-Fisheye-Canon-Digital-Cameras/dp/B000YYDF7W/ref=sr_1_1?ie=UTF8&s=electronics&qid=1261384771&sr=8-1

This is known as the Canon 500D in the UK and yes, there will be a Sigma fitting that is appropriate.

Just ask your dealer and he will know what to sell you.

Enjoy your new camera!

John