Follow the instructions here to root your tablet. if you have issues with rooting, flash_image not found errors, or problems getting clockwork recovery to work let me know. for me rooting was easy, getting the rest to work was a bit harder. i managed to get the Android Market installed but you cannot do it using an APK or the appinstaller sorry
ALTERNATE (NEWBIE-FRIENDLY) GUIDE FOR ROOTING AND GOOGLE MARKET INSTALL ON WINDOWS - NO SPECIAL DRIVERS OR ADB COMMANDS NEEDED
EDIT: the 'appinstaller' app is available on the appslib just search for it. i was unable to get ANDROID market going with it though. all it seems good for is using Z4root to root your device.