I am getting ready to upgrade my OS from Win98 to WinXp..I have been reading dome other posts and others have complained about folder lock in PBooost while Poser 4.03 is running. My machine has a FAT32 file system. Has this folder lock problem been fixed in the program so that you can switch pose folders while both programs are running..i.e. Poser/PBooost? I found at Hogwarden's site where converting to NTFS may solve the problem. I wanted to ask for advice before taking such a drastic step such as converting file systems. Thx DayTimer