Manual upgrade

[jseagull1]

The latest version of Zimbra doesn't recognize the last version installation. When I go to install it, the only thing it asks is if I want to install in the same folder, not upgrade. If I do that, it does not work. If I do a new install, Zimbra works fine. I have my old installation backed up. Can I copy the files and mail over to the new installation folder and what files or folders would they be? I have a calendar, 5 email accounts, and a gig of mail I don't want to lose and would hate to start from scratch.
Thank you.
John

[jseagull1]

Ok, since nobody can tell me what to copy and move, maybe somebody can tell me what to change in my old installation so the latest version installation recognizes it and does an upgrade.
Thank you.
John

[jmhe]

This is on linux? which version/build is your old installation?

[jseagull1]

I'm sorry, it is on Mandriva Linux, 0.90 build 1278 trying to upgrade to the latest version.
Thank you.