i want to get internet working on mandriva 2006

i have a dual boot computer with windows xp, which i am using now to connect to the internet (dsl)

i want to have mandriva able to connect as well

using the same (dsl)modem

how do i do this

when normally running auto internet connection setup in mandriva

it brings up error of address alredy being used

so any ideas how to configure internet connection to run on both my dual boot operating systems (WINDOWS XP & LINUX MANDRIVA 2006)