See this boards url : http://www.supportforums.net/

When the page is refreshed it doesnt show : http://www.supportforums.net/index.php

Im just curious how to do this (not having to display the "/index.php" part of the link)

Im setting up a website and when i click on the homepage it displays the link + /index.php.

Hope you can answer this for me, as its annoying to have in visible in the link.

<a href="/">Home page</a>

Starting a link with "/" will start from the root, like, if you were on http://www.example.com/folder/folder2
And you had a link like <a href="folder3/folder4">Folder 4</a> that would start from current position
And would mean http://www.example.com/folder/folder2/folder3/folder4

<a href="/folder3/folder4">Folder 4</a> would mean http://www.example.com/folder3/folder4 an this case that doesn't exist.

So were exactly do i place this link ?

You modify the link.

Is it a pre-made forum such as vBulletin or MyBB? If so, it's not really explainable, it will be in the middle of a bunch of PHP coding, try backing it up, an searching for it.