well i have a problem with bt...maybe we have the same one...here it goes

i started out with good old regular bt, and noticed it was very very slow...1~3 kb/s isnt the speed at which id like to be dling naruto! then i got bt shad0w which was an improvment (4-6 kb/s)....but still not where i'd like to be. is this the norm? or is everyone else doing better?
i heard somewhere that people can open up ports on the router to make it go faster...is that true? if so, what are these ports, where are they, and how do i open them?
if 4~6 kb/s is the normal speed, im sorry for wasting your time...but if it isnt...help!!! =)