Claudiu, I would suggest you buy a USB floppy drive[I bought one on line for $20].
This would allow you to save the data from your friend's email to a floppy..Take the floppy , insert it into the VA floppy drive and follow the procedure to copy from , floppy drive ..to.. zip drive..

Also available from Roland[down loadable] is the Roland Data base Manager software[RDBM}..This will allow you to save data to a blank zip via Computer..that will play in the VA76..

This program has a learning curve and may be difficult to learn...