Originally Posted by ftpaddict
Uhm no, you can't. As far as I've read, it's impossible to mount an MD lens to an Alpha mount.
Not directly no. But I've seen some people on Flickr and FredMiranda take apart the old Rokkor lenses and replace the mounts using an M42 to EOS or M42 to Alpha mount adapters, and retaining infinity focus.
There is also a guy on that auction site selling a hack of the C****n APS-C DSLRs, which involves replacing the mounts on the camera bodies, which allows you to mount the Rokkor lenses directly.
I think the Rokkors can also be mounted on Olympus DSLRs via an adapter.
Quite a few hacks available out there.