Personally I do not like BUMs applied to the models when I put them in the library, I always go through any model and REMOVE the BUM call by either changing it to JPG or replacing it with NO_MAP. Even Poser4 will load a JPG into the BUM slot. Reasons: 1) I once found over 3GIG of BUM files built up in my texture folders. 2) BUM files take longer to load when I still have a LOT of posing and other characters to work with before I need them. 3) add a few Mil folk to a scene, complete with BUMs applied, and then try to add all the other elements to the scene (many of which have BUMs too) and watch how Poser begins to slow, then creep, then jerk...... Nope, I don't add BUMs untill I am ready to render - it makes my test renders go faster too. Then I delete them when I delete the PZ3 for the last time. It's just more economical all the way around for me. IMO