Funny you'd ask this right now. I spent yesterday doing exactly this, as I just installed a scsi drive on my machine. What egru suggests worked perfectly for me, using Windows (shouldn't matter which version). Copy (not move) all your Runtime folders to a temp location on the new drive, folder by folder is best, because sometimes a huge move will time out. Uninstall/reinstall/patch Poser. The uninstall should not (didn't for me) delete stuff you put in the Runtime folder yourself, so you have a backup. Replace the existing runtime folders with the copied ones. If you copied them to the new drive instead of CD or another drive, it'll only have to change the "pointer" in the File allocation table, not copy the files, so this will be really fast. Open Poser and test random things to make sure it's working. Clean up your old drive. There will still be a Program Files/Curious Labs/Poser directory with tons o' stuff. You can save it until you're sure everything got copied, or go ahead and delete it--your call. Good luck GrayMare