Grant, I have seen an adapter listed somewhere for older FD to EF. The downside is that none of the features such as autofocus and autoiris (fstop) adjustments work. Of course manual focus is probably more desirable and it's no big deal to set the aperture manually either. Also lenses designed specially for digital have improved coatings to minimise reflection between the rear of the lens and the sensor. Here's a link for an adapter on ebay for around $33.00 US.
http://cgi.ebay.com/Canon-EOS-Camera...QQcmdZViewItem Actually I might get one myself as I have a perfectly good 50MM FD lens and a 135 Tokina FD lens which worked very nicely on my AE1 Canon.