bt question

unicorn

i found that whenever i use bt and ie at the same time for a while
my network get hangs and then i cannot use both ie and bt

when i tried to kill the zonealarm and bt and ie all
the network resumed

so i dont feel it is problem related to my pc
it seemed that i have not yet get the tricks for how to use bt in the "free" network of hwl

can any tell me the tricks?
i used pccw at old home and everything worked fine