Hi billy, I am not familiar wihtt he Jamis Capri but I think it might be a lowend model. does the hanger mount on the dropout with the wheel? if so the derailleur is likely swedged to that hanger and you will need a new one. why are you changing the derailleur? is it broken?
derailleur hanger
http://www.loosescrews.com/index.cgi...d=573331523239
__________________
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk