dear all

my internet provider provide internet via pppoe
can i use mikrotik to dail pppoe to get internet as input
and then connect two pc throug the output from mikroik to a hub
knowing that i have rb 433 ah and mini pcmci with 2.4 and 5.8 capabilitis

can i use mikrotik to dail pppoe to get internet as input

Of course. You configure your wan interface as ppoe client: http://www.mikrotik.com/testdocs/ros/3.0/vpn/pppoe.php

and then connect two pc throug the output from mikroik to a hub

Absolutely. Check the manual and the wiki for all kinds of configurations.