I have my Steam library on my HDD. I want to put it on my SSD. What's the best method of transferring it to my HDD? I have stuff like Morrowind Graphics and Sound Overhaul etc in my Morrowind folder. Should I just cut/paste into the SSD? Will that work without any odd hiccups or data corruption? Thanks.

It seems to work fine that way. I copy the entire Steam folder to my external HDD as a backup, and when restoring it after a Windows reinstall, everything works fine. IIRC, the only thing you run in to is relogging on to Steam.

Just make sure you've got room for it.