Just get out there and start meeting people. If you are looking for a specific area, go to those schools in that area; if you just want a CFI job in general, go to a smaller airport (try to avoid the academies and big 141's if you want a job, since they tend to hire their own trainees).
If you are really just looking for websites, here are a few...sorry to advertise sites, Doug, feel free to delete them if you need to
:
Climb to 350 Aviation Career
And there are others, just Google!
Good luck...there are jobs out there, you just have to find them!