Hello everybody I have not yet been able to attempt my ML installation I have however been reading up on my materials and will like to share with all of you my findings.
As far as I can tell wifi will be resoled once you order any of the cards descibed in this post here
I will personally be purchasing the fullsize Atheros AR5BXB112. All these cards are reportedly natively supported by MLOSX. You will need the middleton nios hack for whitelist removal.
Also I just recently found this
On it OP created a guide on how to install Leopard on the t61pType 6459-CTO.
Now I have also read before that you can use kexts from previous OSX installations, (such as SL or Lion) on newer installations and will work regardless. This will probably resolve the Ethernet, sleep and sound.
I will also recommend maximizing your Ram at 8gb (the unofficial supported quantity on this thinkpad) for faster and more reliable performance. I will try this during spring break but if there is anyone with the time and the need then by all means go on experiment and let's come up with a solution together!