No, it means you have no outstanding driver side recall. There were two - the first was a re-issue of the original component, but you get a new lease on life as it reset the corrosion clock. The second recall was/is the final version. If it's not active, you're clean.
The parts are available everywhere. The driver and passenger side components are also used in the S197 Mustangs (2006) so ought to be plentiful. Call your dealer and have them order it but they may already have it in stock. I had both sides done at the same time and my dealer had to order them in (but I think it was from his store on the other side of town which seems to have a bigger parts dept) and I got them installed the next week (my scheduling, not theirs).