TVLinks
http://www.a&e.com
Arts & Entertainment Network
http://www.cnn.com
CNN News
http://www.pbs.org
PBS Online
http://www.cbs.com/navbar/home.html
CBS
http://www.nbc.com
NBC
http://www.fox.com/foxshows.htm
Fox Television
http://www.historychannel.com/
The History Channel
http://www.tv.warnerbros.com/
WB TV
http://www.upn.com/hmupn.htm
UPN TV
Research
http://www.geocities.com/Hollywood/Hills/6578/ratings.htm
Understanding TV ratings