I met a special resident named Special Cathcart in world. She helped me get set so that I can choose sim at login.
Teleporting is still not working, but I have not had the chance to try the suggestions made here, and ran out of time until tonight to try any more experiments.
When I am offered a teleport, or click the "exit" sign at Help Island, my screen does not show any box asking if I accept. When I try to TP, it acts like it might work, screen blanks, the progress bar starts moving very slowly (much, much slower than on login). The progress bar gets about 1/3 of the way across, then stops. The screen then goes to a gray-scale pic of my last location, tells me that I have been looged out, offering to let me view IM and chat, or to quit.
My system - iMac running 10.5.8 (yes I know I need to upgrade, it is on my list...), AT&T uverse internet to fiber optic in the street in front of house, SL version 3.2.6.248086.