I had a problem the other day packaging a BottomFeeder build with ResHacker. It had been working fine under Windows ME, but did not seem to work after I upgraded to XP Pro. I got things going by grabbing a newer release of ResHacker. Now I get word from Anthony Lander that the version on the CST CD works fine in XP if you first delete the executable file that will be created when you use it. So either download the newer version - I found it here, or delete any old executables before you use the old version.