Greetings, Where is the pull cord on my Jag?

Obviously.

ok,then try hooking jumper cables from another car to the jump start connections under your hood.red to positive and black to a good ground..then push the trunk release button,unhook the jumper cables and change out your bad battery.

Thank you. I tried that, though the other vehicle may not have had enough juice or sat long enough? How long should it sit?

just hook the cables up,start the other car,push the gas pedal a little to rev up to around 2000 rpm's for 10 minutes or so,then try pushing the trunk release button,see what happens..

Thank you very much!