This program analyzes an .dio, .fat, .nbh, .nb, .nb0, or .payload, reads out partition info to the screen, and dumps the uldr.bin, xip.bin, and imgfs.bin partitions. It should be compatible with any HTC ROM, and any other ROM that does not need to be run through nbsplit.

http://forum.xda-developers.com/showthread.php?t=548315