Here’s a site, http://digitalrokkor.altervista.org/ that explains how to use those Minolta lenses that we horde on newer Canon digital bodies.
Unfortunately the site seems to be a little dated as far as the bodies they cover, but it does show the conversion necessary. This is really interesting stuff.
While I’m at it, there is also a flickr group devoted to this, http://www.flickr.com/groups/md-eos/