Will the Tokina AT-X 116 PRO DX 11-16mm f2.8 auto-focus on the Canon 1000D body?

Hi, I have a Canon EOS 1000D DSLR camera. I think it's also called the Rebel XS. I want to buy the Tokina AT-X 116 PRO DX 11-16mm f2.8 lens but I have read that it doesn't have it's own auto-focus motor. So it (the auto-focus) apparently won't work on some Nikon bodies because those don't have in built motors but I can't find out if it's the same with my body. I've got some lenses without the USM/HSM but still auto-focus. Does that mean they still have their own motor in the lens or do I have one in my camera. Just don't to spend all that money to find out I have to manually focus all the time. Easy enough on longer focal lengths but at a wide angle like 11mm I'm not too sure I'll get it right.

It gets good reviews and according to this one it does have the auto focus capability.
http://www.photozone.de/...6_28_canon