You may try my Beta release recovery program. It has been tested on a
few HFS+ drives, and works with USB. Please download at
www.cnwrecovery.com and do mention that you want a Mac support for the
30 day beta version. It will attempt to downlaod the complete disk -
from where you may select the files you want - it is currently free!

Michael

Cnwintsall.msi is the install program
The Beta version will work for Mac MFS+, but you may require the 30
licence (Free) to enable it. Please e-mail the required 8 digit PC
code, and you should get something that will detect the drive, and
download all the files.

Michael