Hi, i´m very new in the world of MikroTik, and i need share 2 ADSL connection with dinamyc IP,Gateway and DNS in a LAN (10.0.0.0/24). What can i do? load balancing or i can duplicated the speed of ADSL?
(Sorry for my bad english...) Thanks....

You can do load balancing I believe. You cannot do bonding (eq. combine the speed) unless your ISP supports it but even then I think its pretty complicated.

I would probably do Equal Cost Multi-Path Routing.
/ip route add gateway=x.x.x.x,y.y.y.y
Where x is one ADSL modem and y is the other.

I havent tryed this myself but i think thats how you do it.

Unfortunately as far as I know, you can only do load balancing with two "ethernet like" interfaces. PPPOE connections don't work. I managed to load balance a cable (ethernet like) connection and a PPPOE connection (non ethernet like) at least in a test environment by making up a nasty hack.

I took a regular SOHO router, mine was a dlink I believe, and plugged the DSL into it, and let it do the PPPOE. Then I connected it to the mikrotik so that it was an ethernet connection. It's nasty but it seemed to work.

Jeff