Is there a Grant or assistance for home improvement. I am a disabled veteran and my home is in need of home improvement.

It might help to conatct some of these Americans with Disabilities Act (ADA) agencies. In some cases I believe they will help finance improvements like wheel chair ramps, etc--but they may know of other help being available. Best wishes to you.
ADA Assistance Centers - Local ADA Contacts - Americans with Disabilities Act (http://aids.about.com/od/governmentprograms/a/adanumbers.htm)