Thanks to all.
Ok, so guitar is mono, right.
For drums, I will not use real drums, but a plugin in Cakewalk. And then I will make separate tracks for drum elements (snare, ride,...) and then I will use step editor to lay my drum beat for entire song. I find step editor much easier than piano roll.
So as I understand, these tracks will also be 'mono', not stereo, but when I press play, I will hear the drums on both speakers, right? This is what I am trying to understand.