OS X (Apple)

So i install latest versions mysql and php. (dev.mysql.com and entropy.ch/software/macosx/php/)
And then installed MAMP. So i click the address in my System pref/sharing/websharing
and it cant load it i get error
This webpage is not available.

The webpage at http://192.168.0.11/~enzodad/ might be temporarily down or it may have moved permanently to a new web address.
Error 324 (net::ERR_EMPTY_RESPONSE): Unknown error.

I deleted all the WAMP stuff i could find in folder. restarted macbook and still same error over and over, I cant do a fresh install to wipe i have way to much stuff 1k+songs CS5 etc etc.
I want it back to normal... can anyone help with simple guide/steps

If you check (from a terminal) with the command
netstat -an
what services are listening? Is the webserver port (80) listening?