Assistance needed in Phoenix

I'm looking at purchasing a '94 Laguna Blue LSI located in Phoenix, however, I don't have the ability to visually inspect the car (because I live in North Idaho). Here is what I know about the car: everything is working well (at least that's what the owner is telling me) except for the transmission (which isn't functioning properly). What I don't know is what EXACTLY is wrong with the tranny (could be anything from simple differential problem to full-blown transmission). The owner also tells me that the car is not driveable.

If there is anybody in the Phoenix area that would be williing to go check out the car and see what exactly is wrong with it, I would greatly appreciate it. I am also willing to pay you for your time and services ($50.00). I would preferably like somebody with mechanical skills in order to determine which mechanical components of the car are in need of service or repair.

Let me know if you are willing to help. Thanks.