Bellsnwhistles has lots of help when you want to link your site to another, among other helpful tips.
Rootsweb is a wonderful site devoted to genealogy websites and databases.
Minnie's site has wonderful graphics and buttons for you to use on your website.
This is a great site also.
GeneaLinks
A categorized genealogy directory of well-known and not-so-well-known
genealogy
and history sites to help visitors find genealogy information on the
internet