Welcome to the site, and it's nice of you to be doing that.

I have a couple of areas I would suggest, but just not sure on the names.  Maybe other's could join in.

My first choice would be to find a reputable organization that takes either the physically handicapped, or returning soldiers on hunts.  They are sacraficing alot for this country, and they deserve some quality down time.

The second would be something like FHFH, which is Farmers and Hunters Feeding the Hungry.  They provide meals for the needy, and take either cash donations, or take donations of unwanted or leftover game meat and serve it at shelters and such.  FHFH is just one of many of these types of charitable organizations that have sprouted up.  I would check somewhere close to where you are located and find one like that.

http://www.biggamehunt.net/blogs/bghjournal/hunting-good-rehab-wounded-warriors

Here's one of the stories on this site about the wounded warrior program. It's worth reading and sounds like it would be a great one for your purposes to me.

Good luck with your plans and thanks for for trying to make a difference.

Cammo Man - I am one of the people in our church charged with providing information to the church council on what organizations to send our benevolence dollars toward.  www.woundedwarrior.org as provided in another response is a highly regarded organinization that I strongly suggest.  Being from a hunter background and doing the investigation on the amount of service towards the needy I also back the effort to provide support to the feeding of the hungry through FHFH.org.  Both are highly respected organizations that use thier fundings and provisions very wisely.