Hi Keith:
Thanks, yeah I don't actually own one, I was thinking of buying the AV5 as they are fairy cheap (on Ebay) and then putting the Avant (or whatever other mech) where the CD one is and then running a output cable from this through the case and then into a scart socket. Doing it this way would alleviate the software issues I guess. However, this is a hairbrained scheme.
The other option I had thought of was getting a cheap DVD mech out of a portable DVD player and connecting it in the same way.