No offence to peeps on this board or any other nuke support board but PHPnuke is fairly easy to install. So long as you follow the idiots guide

Did you install the phpbb yourself??

If so nuke should be well within your capabilities after all I did it and I know nothing about PHP.
It gave me great satisfaction in doing it. Went grey as well but it was fun after that.

Saying that I am sure there are peeps here that will assist you when they have the time.