Just bought a Panny PZ750. Any suggestions on the best picture settings? My TV is in a basement and it is fairly dim lighting.

congrats on the new plasma. check out the panny owners thread stickied at the top of the forum page for lots of good info, suggested settings, etc.

Here is a link to the Owner's thread
http://www.avsforum.com/avs-vb/showthread.php?t=843093