Need avice

 Right now it is May 31st 2010, not sure why it says posted February 2009.

I started a new job 2 weeks ago and I am so grateful for that because I've been out of work for 3 months now. However, since my pay is being held back, I won't get paid until June 15th and my daughters and I have gone through the tax returns. I'll be paid twice a month. Right now, I need a way to earn around $300 to $400 fast so that I can pay a few bills that I'm falling behind on and take care of my 2 daughters until I get my pay check. Any suggestions? I can't get a loan because I haven't been with my job long enough. I've tried. I would appreciate any advice. Thank you.