User definable connection speed

due to the fact that the given choices do not include anything that resembles my connection.

I am on 3mb Down and 364Kbs up

if I select any of the given choices I either end up seriously restricting my download speed from what it is capable of or choking my connection as to get decent down load the lowest I can possibly put the upload slider is still higher that the max my connection will allow.

yes I know there are unlimited settings but I like to hold back a certain amount of bandwidth so I can still surf and do other things on the net.

And since I share 35Gig+ of files in limewire and always leave it running yes this becomes a problem as there are always people getting stuff from me