phpbb help.

Wondering how you get the forum to be specific sizes(height) , for example on the front page.

Go to your template directory and edit some tables there
( example: alter

Dont even think about messing around witht he forum templates unless you know EXACTLY what you're doing. This thing is a monster and will need tonns of hours to get it right. I sugest either use premade templates or if you're stuborn, then you will find the answer in your template directory. Just follow the white rabbit:
header.tpl
footer.tpl

or something along these lines...