I see a lot of websites advertising that they will pay you to fill out
a survey or participate in their research.  But when I enter my name,
etc., I just get a bunch of advertisments.  Is there any REAL
companies out there that I can contact about doing this sort of thing?

I don't have any first-hand experience with these companies, but
others have reccommended them. Good luck.

http://www.acop.com

Brand Institute https://www.brandinst.com

Esearch http://www.esearch.com/

Gang Net http://www.gang.net/

Inteliquest http://www.techpanel.com/

Lightspeed http://us.lightspeedpanel.com/

Pinecone Research http://www.pineconeresearch.com 

PBS Surveys http://www.psbsurveys.com/

Socratic Forum http://www.socraticforum.com/eval.asp

Survey Spot some 4 cash http://www.surveyspot.com/joinus.htm

SynergyCash http://www.synergycash.com 

Viewpoint http://www.viewpointforum.com/default.shtml

Vividence http://panel.vividence.com/

Your 2 cents http://www.commonknowledge.com/index2.html

Vocal Labs http://www.vocalabs.com/