I think Dreamshell can be used to copy VMU saves. There would be other options but that might be the cheaper & easier way of doing what you want.
Edit:
I'll leave an example ebay listing here so I don't have to look for it again...
http://www.ebay.com.au/itm/Sega-Drea...IAAOSw7GRZFEX4
Hopefully Zorlon will pop in at some point and post in this thread with some help, he knows a lot about DC stuff