Hi,
Yep, first you need an XM1541 or XA1541 cable. If you're handy with a soldering iron an XM1541 is pretty easy to make up. Do a google for more info...
The best software to use (I use a Win XP PC) to do the transfer is gui4cbm4win:
http://blog.paytonbyrd.com/?cat=11This combination works fine for .d64 images to/from a 1541, not sure how it would go with 1581 though...
Cheers,
Mike.