"not a private key" signing webstart

Somebody please… I’m trying to create a signed jar so that I can grant permissions to th webstartable app (JRPG). Could somebody please walk me through the process I generated key using keytool and attempted to sign the jar with that, but got an error saying

not a private key

please help me!

EDIT: changed the title to something actually sensible (blahblahblahh)

Did you try Kev’s tutorial? It tells you how there I think.

Dan.