Don't give up. Credit can be repaired. I would start by asking friends, family and co-workers who may know a reputable lender that can assist you with this. I have seen lower credit scores turned around in months. Much depends on what is bringing those scores down. If being a home owner is important to you, I am confident that you will get there.
Make it your top priority and work with trusted agents, lenders and the like. Ask lots of questions and follow the advice that you are given.
And by all means, come back to Trulia and let us know when you have purchased your first home. We love to hear the happy endings.
Best of luck to you.