Any job searching tips?

As we come up on the end of another work week, I am once again annoyed at another week or searching for a job with no luck. Unfortunately I've been looking for a while and I am getting increasingly anxious as my options are drying up.
So I'm wondering if anybody has any suggestions on different places to look or different angles at finding a job. I recently graduated with a biology degree from a top-10 university with an average gpa. Naturally, I have been looking for jobs in research science, but all of them seem to require much more school or experience that I don't have. In addition I have been looking at other work in various fields such as legal, etc. So far I have been looking on craigslist, washingtonpost, careerbuilder, and several other job search websites.

Does anybody know of any other job databases? BTW - I'm in the DC metro area

Thanks for letting me vent -

Peter