You can use a mortgage calculator to help you calculate what your mortgage payment could be. Visit NeighborWorks America's site for a mortgage calculator here: http://www.keystomyhome.org/tools/mortgagepayments.asp
The Three Credit Bureas Include:
Equifax 800-203-7843 www.equifax.com
Experian 800-397-3742 www.experian.com
TransUnion 800-916-8800 www.transunion.com