Typically I didn't find this thread until after I'd bought the 240G toshiba drive for the tablet.
For what it's worth, so far I have managed to get the bios to recognise it, but I can't seem to get it to boot off it.
I used Acronis Backup to duplicate my previous disk to an external drive and to copy back onto the new drive, but so far, no luck.
I'm going to try a clean install of windows 7 tonight.
If anyone has any advice on how to get this to work I'd be delighted to hear it.