I messed up my internet connection - HELP

So this is off the SEO topic so I'm posting in the lounge here is what happened to me:

(I'm copying and pasting this from: http://forums.macrumors.com/showthread.php?p=14864647#post14864647 where I initially asked for help)

So I had a small problem and while trying to fix it I created a big problem.

A day ago every time my iMac (10.7.4) awoke from sleep it had this message:

This Computer's local hostname "NAME" is already in use on this network. The name has been changed to "NAME"

I found this thread: http://forums.macrumors.com/showthread.php?t=883927
which had some suggestions.

I took this suggestion:

Toggle Bonjour On/Off

Launch the terminal and type:

To turn Bonjour off:

sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist

To turn it back on:

sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist

And now my internet does not work.

I am able to ping my router IP address but the signal will not go any further. I do not know what I changed but now I am stuck with no internet on that computer.

Also I have parallels installed on the iMac and when I access the internet through windows it works. So when I performed that toggle I must have messed something up, but I cant figure out what.

Please help me.

If anybody is good with Macs please PM me or post here, I will be very grateful.

any advice?

reset your router and leave it off for like 30 minutes, re plus should work.