PokerTracker

I'm looking for notes on a specific player and I'm not sitting at the table with him.

Is there a way I can access the notes I took on that specific player?

Probably the easiest way is to set that player as the active Player in the left hand sidebar within the PT4 View Stats area. Then load up a replayer from any hand you have on him - his notes will be in the HUD on him there.

That was very easy - thank you.

If I alias an opponent player's screen names together, will his combined stats show in the HUD for both websites when I play him again?

Yes, they will.