I use a program called 1-4a Rename to rename the whole library to cm2 extension (or whatever extension I wish to change it to), but I have no idea where I got it from. Maybe someone else knows the site it comes from. Anyway it's great for renaming extensions for the whole folder all at one time. I've heard of PBooost, but was never sure what it did. I'll have to check it out. Thanks for the tip. Melanie