Comp Connection from not savvy tech player

[Grizzl]

hey
Connect to the internet thru cable modem. when i first turn on the computer
the LAN connects thru ethernet. However, sometimes the broadband
connection will connect thru WAN and then EQ wil disconnect and LD
the character.
So i have to activate/enable both to avoid this.

which is better and how do i make it default all internet connections.
thx for helping out a tech newbie......