Wich ubuntu do i need for the dclardy script ?
Thats not a official installer for ispconfig, you might want to write him a message on github if you want to try it anyway.
If you want to use Ubuntu 13.04, then better use a tutorail to install your server as the tutorials have been tested and verified that they work on thousands of servers.
Ubuntu 13.04 apache tutorial:
Ubuntu 13.04 nginx tutorial: