Been playing with the new MSN Search toolbar, it is VERY nice however at work I use Windows Server 2003 as my desktop machine (need it for some dev work). Well, it turns out that it is possible to do this - as seen (of all places) Slashdot - in short you just exctract the exe then use this command:

msiexec /i MsnToolbarSuite.msi TBSDEVCODE=1, seems just fine after that!

Oh, one other thing, to turn off the annoying buttons (which just take up screen real estate for me) go to the registry key HKEY_CURRENT_USER\Software\Microsoft\MSN Apps\DB than add a DWORD value called 'Buttons' with the value 1, turn off the toolbar then back on - buttons are gone!