In the Internet Explorer 5.x you could lookup MS knowledge base articles quickly by typing: "MSKB Q123455" without quotes in the address bar. In the Internet Explorer 6.x it is removed, but it is a feature! Which can be enabled in the Internet Explorer and not only for MS KB but any search site. Save underneath text in regfile and merge it.

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchUrl\MSKB]
@="http://support.microsoft.com/?kbid=%s"

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchUrl\AV]
@="http://www.altavista.com/sites/search/web?q=%s"

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchUrl\Ggl]
@="http://www.google.com/search?q=%s"

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchUrl\MSN]
@="http://search.msn.com/results.asp?q=%s"