Google isn't letting tablets into their Market yet. They may with the latest version (Honeycomb?), but really want only cell phones to run Android and have Market access. I think Google wants tablets to run Chrome instead.

There are other places where you can get various Android applications, but not the official Google Market. Many work quite well on the eDGe, but you must search them out, and not all are on the other sites. If Google market is a must for your tablet, you'll have to wait for a while yet to find one. From what I've seen, the tablets that have promised/shown Google Market have done so with hacking into it, and then are slapped by Google and have to rescind the access.

But, I don't follow it closely at all. So, maybe I've missed something out there.