Forgotten password or hardware reset for Venue Pro phone

I haven't used the phone for several years, no longer have a SIM, don't know the password. I want to use the phone overseas, but I need to be able to get around the password, or to do a factory reset However, factory reset seems to require that I get into the phone o/s first.

Can anyone help me to reset without being able to get into the phone?

Can anyone help me to get around the forgotten password?