Ummm, what is a search server?
If you mean host cache, if there isn't a web page you can go to, like you used to have on limewire, put one up by having a nice person with a home connection share his host cache file from his client via a web server. You could post one to a free web server too. If you only listed say 50 IP's that would get most clients started and you would have low bandwith so as to not make your free web site suspect and shut down!