I have installed the new version of zen cart and have imported the old database. Now I am getting error:
Front End:
Your database appears to need patching to a higher level. See Admin->Tools->Server Information to review patch levels.

Back end:
database upgrade required. please run the 1.3.9-to-1.5.0 upgrade via zc_install

I cannot get in to the back-end to change anything.
I am using Go Daddy - Linux - with a 1.5 send cart template

Thank you for your help!