First place I always go when I was stationed someplace was to the IPMS website: http://www.ipmsusa.org/ . Then I'd go to the chapters/region page and look for clubs in the new area. Some only had a phone number for a POC and others had websites with links to local hobby shops, museums, etc.
When I went to the Army Logistics Management College at Ft. Lee, I joined the IPMS and AMPS club out of Richmond. I know there was another club more north than that one though. www.novaipms.org/index.html
There's also a DC area club: http://www.ipmsdc.org/
Any of those guys would be happy to direct you to places to spend your money!