I always hated those needless extra steps in screenshotting. And then two months later your Desktop is full of things you forgot to delete and you had to figure out why you had ever needed a screenshot of top in the first place...
Also, if you have OneNote running, at any time you can hit Windows+S to clip an area of your screen and copy to your clipboard. I use it all the time.
http://wisdom-soft.com/products/screenhunter_free.htm
We just recently upgraded to Office '07, so I'm guessing I'll have to wait another 3 years or so for the Office 2010...
edit: (missed the mention of Outlook, guess you aren't able to run FUSE)
EDIT: Only webpage screenshot, not full desktop. Should be easy to implement an external (background) running program to copy to clipboard the screenshot, though.