OpenSearch for Channel9 will allow you to search channel9 from the FireFox 2 or Internet Explorer 7 search box.
http://www.meamod.com/c9/
To add to firefox click glowing blue button and select "Add Channel9" or click link on above page
To add to IE7 click Orange tab then "Add search providers" and Select "Channel9" or click link on above page (If you just select "Channel9" from the drop down menu and dont use
"Add Search Providers" it will be reset on the restart of IE7)
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Once added to FireFox
(With Term Suggestions)
Once added in IE7