Here are a few tips on how to go about looking for work that you can do from your home.
Never ever ever pay for a job. A legitimate employeer will not ask you to pay for any training materials, interviews, etc. Don't trust someone you don't know to "pay you back" for training materials either. That has scam written all over it.
I love www.wahm.com. They have a Telecommuting/Job Listing section to their website and try to only list legitimate jobs. If you want to try to find the jobs yourself check out CraigsList's jobs section and check off the telecommute check box. Look outside your local area for telecommute jobs. Most of the work I do is with people who live over 2,000 miles from me.