If you are trying to redirect users to http://www.nikibrown.com/portfolio/ after a suitable delay, your best bet is to use the following HTML in the head section of http://www.nikibrown.com/:
<meta http-equiv="refresh" content="2;url=http://www.nikibrown.com/portfolio/" />
That will cause the browser to jump to the new page after 2 seconds. If you want the redirect to occur without ever having seen the home page, create an .htaccess file in your web root directory with the following:
Redirect 301 /index.php http://www.nikibrown.com/portfolio/
The "301" indicates a permanent redirect - use 302 if it is to be temporary.
I note that you are moving things around a bit as I type this, so my response may turn out to be irrelevant.
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