Cemetery Records Online - Directory of SOME names in SOME cemeteries in the US and abroad.
Cyndi's List - List of genealogical resources
Family Search - The Church of Latter Day Saints links to genealogical resources on the web.
GenWeb Project - Network of volunteers working to create a center for genealogical research for every county in the United States.
RootsWeb - Sources and links for genealogical researchers.
The following are not links, but these libraries might be helpful in you family tree search.
Clayton Library - You will need a Houston Public Library, or Harris County Public Library card to access part of the online collection.