will a 20d focusing screen work in a rebel xt?

[dsg2003gt]

I got some dust on my focusing screen and tonight I removed it and in the process I put a slight scratch in it. I cant seem to find a replacement on the net, but I can find some 20d focusing screens. I am pretty sure they both are the same size/shape. Im just wondering if the AF points will still light up?

Also, if you know where to get a new XT focus screen thatd be great.
Thanks!
Matt