hmmm..... XPCreate might be doing that.....and if it does, dunno why. Campitbility? It really shouldn't matter i don't think, all mine are 8 characters, just because that's how microsoft named them. however, normal ISO 9660 standard for CDs require 8.3 names which might be where your renaming is coming from. Joliet would solve this. As for implentation into XPCreate, I think GM opted not to included that one. There aren't many like the Advanced Networking Pack, and it could very well be incorporated into SP2. But you'd have to get the final say form him.... are the files with the tilde from hotfixes? That could be microsoft, because it keeps with ISO 9660 when creating CDs for compatibility.