pghFL, to achieve root, you only need to install the adb drivers and verify by going to Windows Device Manager and seeing Android Phone/ThinkPad Tablet. The installation of sdk is not required for root. Ignore the "warrning:Activity not started" in the dos box and press enter to continue (See screen shots posted by ker2 earlier in this thread) and after you achieve root complete verification check with Root Checker Basic on the Android Market. If you receive "Exploit Failed" in the dos box follow the prompts and then retry the batch file after unplugging and replacing you USB cable.
Some tips from my Install:
1) On TPT, The USB Settings had Media Transfer Protocol (MTP) enabled
2) On TPT, The Accounts and Sync Setting had allow sync with PC by cable enabled.
3) On TPT, I had set enter PIN for access to files enabled, so the prompt on the TPT for a pin can be ignored
4) Make sure you disable any Screen Locker, this is any prompt when you bring the tablet out of sleep mode like PIN number, diagram, or password.
5) Make sure you are connected to a WiFi network and Just to make sure plugged into a power adapter.
6) Cross your fingers and count yourself among the majority that have achieved root.
I thought mine did not work the first time, because I am a novice at rooting and saw the warnings and assumed rooting failed, so check the success with Root Checker, before assuming it fails. To Dan's credit, there have been no reports of bricking from applying the exploit, but you may have to apply the recovery method if you achieve a boot loop, but remember at any point someone may be the first to brick their TPT. Rooting is always owner risk.
If you are happy with the exploit, contribute to Dan on his blog and report your contribution to the forum, so it will be recorded.