First i followed instructions on this site to the point of pppoe configuration, because there's where broblems begun. Kernel recompilation went smoothly and after some time i could pair my phone with gentoo laptop.
But now pppoe - first thing is to remember, to recompile kernel with ppp options enabled (basicly i compiled all of them into the kernel). then
# emerge -atv ppp
but afterwards i couldn't start the connection.
Then This thread allowed me to connect. Important stuff is a login data from your cell phone operator, like login, password, dns etc.
ATD*99***1#
This bit tells the phone to start internet connection and share it