Calculating EV, some questions.

[OrianasDaad]

I've been going over my hands and have been calculating EV for those hands based on opponents VPIP and PFR percentages, and using Poker Calculator 1.1.4.1. I just want to be sure that I'm doing it right.

Let's say that the pot is 4 bets and my opponent bets out on the flop. I have (according to my calculations) a 45% chance of winning, a 7% chance of tying, and a 48% chance of losing. My calculations have been:

Calling: 5(.45) + 2.5(.07) - 1(.48) = +1.95
Raising: 6(.45) + 3.0(.07) - 2(.48) = +1.85 (assuming opp calls)

A couple of questions:
-Am I even doing this right?
-Do I need to count the tying %'s, or are they just academic?
-How do I figure EV for "if I am raised", or check-raising vs. betting out?