Please help NEED 4 BEDROOM HOME ASAP!!!!!!!

I am married with 5 children and one on the way. My husband and I are both disabled and are looking to rent a 4/2 1/2 bath home in the west or far west houston area by January 15,2009.Since our only income is disability we can only afford rental payment that is around $800.00 to $900.00 monthly. Please help.