Could someone please help me?

When using LimeWire I do what I have to do and then uninstall it as it slows my PC down.
I recently went to install it on my PC, and it was newer version. So I downloaded it but I keep getting an error message which I have typed out below....

"LimeWire was unable to initialize and start. This is usually due to a firewall program blocking LimeWire's access to the internet or loopback connections on the local machine. Please allow LimeWire access to the internet and restart LimWire."

I have never had any problems with LimeWire before and I haven't got a clue what to do. PLEASE can someone help? I will just die without my free music!

Thanks in advance!


B