I know you're ps2 and I'm ps3, but I'll do my best to tell you what I do as a Madden player who only uses the Broncos...
For my offensive playbook, I use the RNG...With Tatum Bell at HB, there are enough running plays where you can utilize him well...Personally, my running game consists out of a number of sweeps in the I-form and Fullhouse formations...I like to mix in the FB and HB dives as well, but make sure not to cheese them because, well, it's just cheesy...
When it comes to my aerial attack, I like to take advantage of the WR screens out of shotgun, in the 5 WR and Normal Shotgun formations. The screen out of the normal shotgun is my favorite because it gives you a great post option to marshall...When running these screens, I usually like to give the ball to royal because of his spectacular speed...When I first learned about these screens, I ran them non stop and cheesed the hell out of them (Real, Eazy and a few others know about this), but I've really laid off of them...If you can effectively utilize them while using a mix of other plays out of shotgun formations, you can sometimes make your opponent think too much about what you're going to call...
On the defensive side of the ball, I think the Broncos are very underrated (But only for Madden...I know they suck in real life)...You've got a great secondary, at least one elite LB and an OK d-line...I don't know how it goes on the ps2, but this year's madden is all about the zone defense...man is pretty much useless unless you're trying to stop the screen, or other situations..
Also, with your cover 2 defense, you put yourself in kind of an iffy position if you're playing someone who likes to throw the ball deep...In those situations, it's hard to go wrong with some form of a cover 3, or at least 3 deep men...
By no means am I a Madden expert, but I certainly hope this helps...If you have any other questions, feel free to ask them here or pm me...
Subject: The Denver Broncos 
My defense plays fairly well in the first half after that................... the players dont cover D lineman stand around and watch the play go by after initial penetration into the back field. its so bad in fact i have made many personel changes just to be able to compete. What is the best play book and strategy to use with Denver on "O" and" D" I curently use cvr 2 d plybook and TB ,and denver playbook 
