Redirecting website visitors to a particular folder ?

Hi All,
A small doubt.

Lets say, I have a domain www.testabc.com

And I got vBulletin forum installed at : www.testabc.com/forum

Now whoever visits my website www.testabc.com should automatically be redirected to www.testabc.com/forum

(I am planning to construct home page at a later point of time. Until that time, I want my users to redirect to my forum directly)

What are the various way that it can be done ?

 

I only know of two;

-Modifying the .htaccess file
-Using a tool in the Cpanel (if you have it)

 

Thank You for the reply.

Can you please tell what is the exact line I need to put in htaccess file to achieve this ?

Can you please name the tool so that I can check with my hosting provider if it's available ?

 

I think it's this one:

http://www.webweaver.nu/html-tips/web-redirection.shtml

or

http://webmaster.iu.edu/tool_guide_info/redirect.shtml

 

Yep ! I found that.

Let me see if that works...