WordPress MU

1st time trying to install WPMU, sorry if this is very basic but can't understand what's wrong.

I've followed the instructions and have downloaded the files into the main directory. The url is http://healthy-diet-solutions.com.

When I tried to go to: http://healthy-diet-solutions.com/index.php I received a weird page (it's still up if you need/want to see).

It's being hosted via HostGator, if that matters.

Am I missing something or need to do something to get WPMU running?

Thanks in advance for your time/help.

Is it a new account?

It looks like something is wrapping your page into an iframe.

Yes, it's a new account. Is there something I need to do to get rid of what appears on the page?

THanks for your help :)

Well, I'm seeing the install screen, so fill that out.

Well, not sure what happened or how, but it's working! Thanks a bunch for your help!