Can you list the device which were found? There is a great site called "RadarSync" which has a vast selection of drivers for various devices. I first heard about the website through Lifehacker.com. Here is the link to the article:
"Find Vista drivers at RadarSync" -- written by Gina Trapani (http://lifehacker.com/software/vista/find-vista-drivers-at-radarsync-232085.php)
When you're upgrading your PC to Windows Vista this week and you're missing hardware drivers, check out RadarSync's collection of Vista drivers, compiled in one place for your download pleasure.
Windows Vista is better than you'll expect at finding drivers for your obscure whoozywhatsit card, but this bookmark's a good one to have, just in case.
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The direct link to RadarSync is http://www.radarsync.com/vista/
I wouldn't worry. Sometimes, Windows will display your USB or Firewire ports as devices. Windows Vista just came out and, despite what Microsoft might say, there are still some kinks to be worked out.