If you want to get hold of updates for Windows 7 or Vista when you’re running Vista or Win 7 already, you can get the updates via the updates catalog (catalogue): http://catalog.update.microsoft.com/ (the pages require IE of course).
I actually had to run up my virtual xp machine to get hold of that link! I simply couldn’t remember the word “catalog”. Heh.
What inspired this blog entry was that I thought I’d have a go at making a fully up to date disc of Win7 before I put it on my wife’s PC, i.e. mount the wim with imagex, and use dism with the latest updates. Thought that would be fun, but then I couldn’t get hold of the updates of course. Sorted.