I plugged in my old laptop drive last night.
A quick backup using the PS3's utility, install firmware from usb key, and restore and I am back up an running.
Why didnt I do this before!!
It is a lot easier than you'd think! I'm really glad I did it too. Now I don't have to worry about running out of space anymore

The only thing I had a little issue with was my trophies being set back to 0% on games I hadn't played for a while.
This is just fixed by going back to the XMB and syncing them again.
It scared me a little when it happened first. I only needed 2/3 trophies to get my Batman Arkham Asylum platinum, and when I checked I had 0% of the trophies collected!
