You can only d/load as fast as your connection will allow. Being on dialup, the best you can hope for is 5-6 KB/s. They'll all be able to max out you d/load bandwidth. Even the other modem users cause you'll probably be connected to more that one.
SO it doesn't matter, they'll all deliver the same speed. You'll have to upgrade to dsl or cable if you want faster d/load speeds.
This post has tips for setting up LW with a dial-up connection:
http://www.gnutellaforums.com/connec...tml#post175733