So did you find a solution for yourself?
I was curious whether a proxy might do the job. (I don't know if it's a viable possibility in your situation.) That would also mean going to LW's Tools>Options>Advanced>Proxy & making appropriate settings. More on Proxies here:
A Fix for those whose ISP's block Limewire pages 1 & 2 which has a link to alternative instructions.
Another Insight proxy solution