Force CDDB/Gracenote lookup

I was in the airport on Thursday, without internet access, and I wanted to add a new CD to my iPod, so I typed in the CD info and track names before ripping it. Now that I'm hooked back up to the internet, iTunes won't look up the Gracenote/CDDB info for it since I typed it in manually. How can I make iTunes forget what I typed in and look up the track information? I don't mind deleting the AAC files I made last Thursday, so if I have to reimport the CD it's no big deal (that was my goal anyway).

Thanks in advance!