So once you have gone to the trouble of getting Lookout to work in Outlook 2007, you find that the date parsing is broken (I got the “incorrect date syntax in range” error). You can either force Outlook to downgrade its .Net framework, or fix the Lookout dll (I downloaded the version on the site; it worked).

Update (20091019): use Lookeen or Xobni to get full 2007 / Windows 7 goodness. In related news, I’m enjoying the new search and indexing in Thunderbird 3.0 beta 4.