The 120 drive, being a rebuild from bare metal and the WinXP installation disk, is relatively clean, but of course I'm going to be spending the next couple of months reinstalling things when I run across something that I hadn't yet needed.
Most frustrating was recreating my VPN and network connections to my company computer systems. At one point yesterday I had four computers running -- my personal laptop, company-issued laptop, and both desktops -- while I hunted up configuration information. I then had to take the personal machine to the upstairs conference room where we keep a connection to the outside world for visitors, as my personal machine won't connect to the company network at a company facility, only through VPN from the outside world. From there I could test all of the connections, which seemed to work okay. But when I got home, the first time I tried to connect everything got crazy for a while. After spending time on the phone with our IT desk, they hard-reset my network password, and the connections started working again.
This rebuild leaves me with a subtly different system. Fortunately, I'm not someone who must have his system exactly the way it always has been, but it's still mildly annoying to not be able to get things quite the way I was comfortable with them.