I wouldn't bother with elance, rentacoder, or any of the other freelance sites out there. I had this idea a few months ago when I got laid off.
It's flooded with Indian groups and coders from eastern Europe that will do the job for $5/hour. The problem is that they pretty much set the market price on these sites and the people hiring you now have it in their mind that this is the going rate.
There are a few projects here and there that might actually make you money, but I think your time can be better spent elsewhere.
Craigslist is a good place to look. Find some companies locally that need a freelancer/contractor.
How much money do you have left? Also, how much are you burning through each month?