Gayle,


Save your money and invest in good lenses.


If the 35mm Canon is an "EOS" camera you can use the lens that's on it. Hopefully it's a EF 50 f1.8 or EF 50 f1.4.


If the camera is an AE-1 or earlier type, you cannot use that lens on your Rebel. Those are known as FD mount lenses.


google "canon eos lens compatability" and look at http://en.wikipedia.org/wiki/Canon_eosfor more detail.


Hope this helps,


Chuck