One of the R2 feature specific management tools that is in the admin tool pack that a lot of people don't realize can be used on non-R2 servers is the Print Management Console. I've blogged about it before, but I try to put it on any XP box or server I'm maintaining due to the ability to get a nice quick snapshot of what drivers are loaded on servers at a location. The 'published printers' section will be empty on non-R2 systems.
With the official release of MMC 3.0 for everyone, it makes sense to install this now more than ever.
Admin tools webpage:
http://www.microsoft.com/downloads/details.aspx?FamilyID=9BFB44F5-232A-4FB5-BC14-45BFD81B7AC1&displaylang=en
TinyURL version of that link:
http://tinyurl.com/l3y5q
Also of note, if you install PMC, and then remove it, then install it again, and want to remove it again, you'll run into problems. Odd corner case scenario but it is documented at:
http://support.microsoft.com/kb/914219