Sounds like you are in somewhat of the same situation that I am - a bit of a long layoff due to life getting in the way.
What I've done before getting started again is really figure out what my goals are, and base your program off of that. Do you want to add size? Lose fat? Increase strength? Increase endurance? Once you know where you want to end up, it is a lot easier to know which road to pick in order to get there.
Regardless of where you want to get to, don't overdue it from the start. Give your body a chance to get used to training again. Muscles are not the only body parts that get de-trained. Take care of those tendons and ligaments as well. You don't want to injure yourself because you tried to get to where you used to be too fast.
There are so many great programs/training methodologies on this site that it shouldn't be very hard to find one that mathes up with your needs.
Post again if you need any further suggestions. Good luck.