Need just that last 2 percent help please anyone

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I am a noob to concrete5 but not to website tech. I just installed and setup my first site with concrete5 on wamp. The site works sorta...
Http://www.zombiecagefighter.com/concrete

The problem is if you dont type the .../concrete on the end it gives a directory listing instead of the site like when you do type it. I am sure there is an adjustment I need to do to the xamp configuration. Please throw me a bone anyone.

This would be the last part so I can move into using this awesome solution forever more!

Thanks in advance
~Coog

coogrrr