I can't find the thread on here, Gill, but I found what I had written elsewhere, if this helps:
I purchased a Crucial 120Gb SSD drive, which came with instructions on how to migrate an existing system to the new drive, using the Acronis clone tool. As I already have Acronis on board for backups, I didn't need to install Crucial's version, so used the Clone tool as instructed to clone my existing C drive to the new SSD. The clone job took about 18 minutes, which worried me, as I thought it was going to take much longer for an 80Gb drive, but I thought I'd go with it and see what happened, as all I needed to do then was physically swap the current hard drive for the new SSD. Had it all gone to pot, I would have still had the original drive which I could have popped back in, plus I had a backup on a separate backup drive, so I had nothing to lose, really, as all of my data was on other drives, and the C drive only had Windows and programs on it.
So, with trepidation, after exchanging the drives, I fired up the machine, and within about 20 seconds, my desktop appeared as normal, and everything seems to be working as it should. I'm struggling to believe it was all that simple, but now I have a much faster booting machine, with about 45Gb of space on my C drive, compared to about 4Gb which I had before. So, all in all, I'm quite pleased with myself, and it was all done before lunch!