Read the post on installing the Proper Google Android market (help creating google account for android market). The easiest way is the non root version.http://www.megaupload.com/?d=QSM6ATPB
Extract the files. Transfer the folders to the SD card (root) and then install the apks in the folder APPS
using file manager on your device in this order:
-1.Google Services Framework
Reboot your tablet.
You will now have the Official Google Android market (Not the latest but never the less working)
Apps lib is not a full market that is probably why you are struggling to find much.