How frustrating this must be!! Gather all the paperwork you have to take with you when you go see your own attorney. Now you *do* need to lawyer up, as the estate will probably file suit against you.
Stupid greedy blood sucking relatives.
Good luck,
Sarah
http://en.wikipedia.org/wiki/Joint_tenants_with_rights_of_survivorship#Joint_tenancy_with_right_of_survivorship
Has a fairly easy to understand description of both. Though it refers to real property it's not that much different under the circumstances.
It is exactly this type of situation that...