I have upgraded my laptop to a 120gb hdd and used an upgrade kit from apricorn which comes with an external usb case for the old drive and software to do the image and move that to the new drive ...for most cases you buy the drive, stick it in the case, and run the software and you're in business. It came as a bundle with the new drive from newegg for a very good price.
In my case I had to take out the old drive first and stick it in the external case and do it from there ...that is ONLY for thinkpads for some reason. It is detailed on their website. Now, you ask why I told you this? Because, the old drive (which was running fine) 40gb is great for a backup. The apricorn software included also does incremental backups and imaging so you can use it as a backup solution afterwards. It has rescue features so you can make the image drive bootable if you must. That's one thing. Another is Karen Ware (google it) ...she has a FREE incremental backup app you can get off her site ...so no excuses for not backing up properly, eh? ************************************************************************* ** List info, subscription management, list rules, archives, privacy ** ** policy, calmness, a member map, and more at http://www.cguys.org/ ** *************************************************************************