My first impression is that the MSN Toolbar Suite is very cool. Find out more here at Channel 9.
[UPDATE 15 Dec: Yes, it's cool. I use it as a single point-of-search for Outlook and my local documents. However, I still use, um, another web search engine, because I still think MSN's Web Search is lagging well behind the competition.
After you've installed the Toolbar, right-click on the "Indexing" (magnifying glass) icon on your taskbar, open the Help file, and read "Tips and Tricks."]