ISP's can selectively filter/shape ports that p2p uses and still let you download from other internet sites. The links in this thread can explain it better that I can:
http://www.gnutellaforums.com/showth...ing#post129712
You could try setting a proxy:
http://www.gnutellaforums.com/showpo...3&postcount=11
Try the suggestion in foolofthehill's post here:
http://www.gnutellaforums.com/showth...863#post217508
I think the only other option is to change isp's. Maybe someone else will have a better idea.