install broadband connection on red hat?

hi ,
i m new to linux ,
i have adsl modem , and i have two os on my machine windows and redhat
. i install pppoe (broadband ) on windows , but i don't know how i install broadband on redhat .

plz if u are confirm then tell me the solution because already i dump my one adsl modem , because i do sme wrong configuration in settings of modem .

i hope you get my question

so plz tell me if u know .

thanx in advance