This website is a helpful resource:
https://www.broadwayforbrokepeople.com/ ETA: Upon further thought, I guess it doesn't give much info about where the seats are, which is what you're looking for. So hopefully other people can give you more info.
I can tell you about How to Succeed.... You'll need to get there early (I'd suggest at least two hours before the box office opens), and the seats are on the sides of the orchestra. They're labeled as partial view, but I had absolutely no problem seeing all the action. They do have a lot of tickets to give away, but the line fills up quickly.
Updated On: 4/27/11 at 11:03 PM