^^ that is for Debian and Ubuntu.
U can configure adsl using GUI in Fedora.
go to menu system tools>network config > run it and when asked try xDSL connection-thats it.for switching on BB u need to go to this menu and u may need to give root passwd each time.
another way is to use command line.open terminal;first u need to be super user(admin/root)
^give root passwd and press enter to get a "#" prompt
now run:
OR
adsl on = adsl-connect
^i am writing this from my old sparse memory of running fc4 last time.so do check GIYF.