First download Password Depot to your new computer and install it:
All previous versions can be found under:
To unlock it on the new PC to the full version, you need your unlock code, which you received after ordering by e-mail.
To transfer your password databases to the new PC, copy them (e.g. using a USB stick) to the new computer. These files have the file name extension .pwse, .pswd, .psw or .psw7 etc. and are stored by default under "\Documents\Password Depot\".
If you have made individual settings in the program using the options and would like to accept these as well instead of resetting them:
These are stored in the file pwdepot.cfg. You will find them under
C:\Users\<USERNAME>\AppData\Roaming\AceBIT\Password Depot <VERSION> (under Vista, 7 and 8), resp.
C:\Documents and settings\Application data\AceBIT\Password Depot <VERSION>
(under XP) and would have to copy them to the appropriate directory on your new computer.