try to find a friend with a university or company internet connection (with more bandwith as you)
give him a free happy meal each week in exchange for him keeping your dedicated server in his room on his better-then-yours internet connection
use a 2nd machine to host the server ;)
or.. try to get some ISP convinced that they should host some gameservers to broaden their offer to the younger public, and announce that you're willing to voulenteer for as game-admin for them :lol: