I went ahead and wrote my Poser and ProPack serial numbers on the CD's in permanent marker... as a back-up, I also keep them on a text file in my Linux box as well (The text file also contains my Q3A CD-Key, my Half-life CD-Key, etc etc...) That way, if I have to re-install on the laptop, I go to the other machine, and there they are. My Windows-based laptop contains a similar file, listing what little licensing info needed for certain Linux services on the Linux box (up2date, WineX reg., Linux Q3A CD-Key, etc.) Since I know that both hard drives won't be trashed at the same time, I know I can always access the info from on, on the other :) /P