Alrighty, starting from scratch, uninstalled all java, then re-downloaded it. When i double clicked the hd6.jar file it brings up a prompt asking what application i would like to use to open the file. on the command prompt i typed
ftype | find "jarfile"
and was returned
jarfile="C:\Program Files (x86)\Java\jre1.8.0_73\bin\javaw.exe" -jar "%1" %*
I downloaded the original zip folder to the standard downloads, extracted it to a folder "HeroDesigner" in the Documents folder. Forgive me for being so lost, but I have not used command lines since the early 90s and have forgotten most everything on how to do it, so please be patient with me.