How to use lenses for a Nikon D5000 on a Canon T2i?

My brother has many different lenses for his Nikon D5000 and I just got a Canon T2i. If we could just share lenses it would make life much much easier. Is there some kind of adapter out there I could get to do so? Please help me out: D

Thanks

Added (1). I got the T2i for the video more than the photos. I realize Nikon just released the D3100 but I seemed to like the T2i a little better. Plus I have previous experience with Canon cameras.

Wouldn't it hav been easier just to get a nikon yourself? Anyway, there's adapters http://www.bhphotovideo.com/...BEOSN.html

Depends on the lenses.

If he has AF-D or manual lenses then yeah you can adapt them in manual focus mode only.

If they are lenses with built in focus motors and electronic apertures only, then you are on a hiding to nothing. Manual focus, wide aperture shooting in manual mode via an adaptor which will either lack infinity focus or have a cheapo element.

Buy canon lenses or get a nikon camera.

I'll repeat the question, why not just get a nikon?