If you were running Linux it would be pretty easy. Windows is more painful; some files can't be copied (or can't be safely copied) while Windows is running, and there are things you'd need to fix up in the registry after copying it.
I've done it manually myself but I took a while to figure out how to make it work and don't remember the details; I'd recommend finding software that can do it for you.
Edit: BTW, my Toshiba's hard drive died shortly after the warranty expired... maybe it's becoming a common feature of the brand?
Last edited by MG23; 3rd Jun 2012 at 20:10.