Installation Help Please

[eluser]jozhall[/eluser]
Ok, I am brand new to these forums and I wish that my first posting would be surrounding something a bit more entertaining or enlightening. However, all I need is installation help!

I followed the installation instructions and now all I get is a CI generated 404 page when I try to access the index.php. Please remember that I know very very little about CI and was hoping to play with it a bit first before I commenting on these boards. I have doubled checked all of the installation instructions and I still can't figure out whats wrong.