Have you tried out the OSX86Tools utility? I just downloaded it and it seems like it could be useful:
http://code.google.com/p/osx86tools/downloads/detail?name=OSX86Tools_1.0.150.zip&can=2&q=
http://code.google.com/p/osx86tools/downloads/detail?name=OSX86Tools_1.0.150.zip&can=2&q=