Here's a few off the top of my head:
* The holy trinity (NAnt, NUnit, NCover) although I'm favoring MbUnit lately
* Subversion (I personally like having a local repository)
* CC.NET (even for one man builds, I just like having it running and it comes in handy with demos and presentations on CI)
* Ankh or that other VS addin for hooking up to Subversion repositories from inside VS
* Team Explorer (if you need to hook up to TFS)
I have a bunch others and been meaning to post an entry on setting up a new developer machine (6 months in I had to re-image my existing 9400 but I'm getting a new M90 with 4GB in about a week)
Windows XP SP2 or Vista?
If Vista, x32 or x64?
I've recently started using Launchy, and I love it.
Recently dropped Free Download Manager in favor of the DownThemAll Firefox addon. Much faster and works correctly with SourceForge (FDM doesn't).
You misplaced the LiveWriter add-ons under Live Messenger
I second the 7-Zip recommendation, much better program.
I use TClockEx instead of MemInfo. It lets you show the memory load without having to hover, and you can customize the date and time too. (And like MemInfo, it's free.)
No local SQL server? I find it invaluable for offline hacking in the coffee shop.
Nice set of tools..
Although i would rather use Quicktime Alternative
How can you live without Beyond Compare? Espessially if you are using SVN.
Honerable mentions I also have others have mentioned a few of these:
Console2 (don't forget to set up Console Here on your right click menu in explorer)
NAnt - however do you build without it? Also great to automate other tasks.
Consolas Font - much better than the default courier stuff.
IEDev Toolbar - great stuff for Web devs. Although if you are using FixFox Firebug seems to be all this and more.
Fiddler2 - WOW! Awesome tool... now with videos on line that actually show you how to use it's goodness.
Reflector - don't write .Net code without it.
DbGhost - I can't work without it anymore. Awesome change management for databases.
Lookout - I still prefer it to search email in outlook to Google Desktop!!! Wish MS didn't orphan it.
Plaxo.com - excellent tool to sync Contacts/Calendars between PC's, etc.
ClipMate (most useful clipboard extender ever the end)
Trillian and Skype to stay in touch
cygwin for linux junkies like me
Minesweeper :P hehehehehe
Zone Alarm Free
Cannot believe you chose Office 2007 when there is OpenOffice from OpenOffice.org
Free open source, but will export in M$ Office formats for those who are stuck to that paradigm
A Linux distro containing replacements for most of your list.
On any computer that I work more than 10 minutes I install Total Commander
I haven't tried Notepad2, but I use Notepad++ all the time. It has sytax highlighting for a ton of languages, code collapsing (at least in XML), macros, regex searching, and the list goes on. highly recommended, from 1 geeky jew to another :)