Hello. I was wondering how can I make a new empty page in jforum?

Like for example, my website is: http://forums.techdevelopersguide.com.

So what I wanna do is when people type http://forums.techdevelopersguide.com/games , a new blank page should come up which I want to work on

Thanks alot in advance!

Do you mean the HTTP 404 handling?
You can modify WEB-INF/web.xml, add the following code:

    <error-page>

       <error-code>404</error-code>

       <location>/missing.jsp</location>

    </error-page>

And then, add a new file missing.jsp in your web root

Got it Thanks ^_^