Each TKL Appliance can be accessed, generally from 4 places (add the colon and port number "http://yourip:12321"

webmin (http://yourip:12321)

webshell(http://yourip:12320)

mysql (http://yourip:12322)

web(http://yourip)

You can try Akeeba backup to a Lamp install.  It might also work with the Joomla ap itself (I recomend this as you get a much more compact set of backups and restores)...If you mess up just try again.

Depending upon how big your site is though you might consider just rebuilding then you get a really clean system.  I did this going from 1.5 to 1.6 for instance.  You can start migrating easily from 1.6 on up in Joomla.

 You will love having your own system.

Good Luck!

As these appliances are designed to run as headless servers the idea is that it just sits in the corner with no monitor, mouse or keyboard connected. Personally though I like to set a static IP while a monitor etc is still connected, that way the machine will retain the same IP even if it gets rebooted.

So you can just use a browser from any machine that has a network connection to your server. Personally I also use an SFTP client (Filezilla is my preference but WinSCP seems popular too) and an SSH client (I just use the SSH comandline tool from Linux, but PuTTY is good if you are working from a Windows machine).