“the iscsi name specified contains invalid characters or is too long”

This applies specifically to the iSCSI Intiator for Windows XP, but might apply to other versions as well. 
Check to see if there are underscores in your volume group and/or volume names.

Downgrading from Vista to XP on Gateway MX8711 and similar Vista-only laptops without a floppy drive.

OK, I was going to finish this off at some point, but I’ve gotten busy with other projects, so I figure I might as well post what I have so far…  If there’s any interest, let me know and I’ll see if I have any more useful insight… 
 Step 1: Get this stuff:

Intel Matrix SATA drivers for the Intel(R) 82801GBM [...]