* Four of the drivers are starters, the other four are bench drivers. The starter drivers you will get points for where they qualify at, for laps led, and where they finish the race at. Whereas the bench drivers will get you points for where they qualify at ... so for them it don't matter if they finish first or last or last.

*There are three groups of drivers. Group A (the more seasoned drivers, drivers that win more...) Group B (drivers that are good, but don't win as often) and Group C (the underdog drivers...the rookies and the drivers that you don't think of to win races.)

*From Group A you pick one starter driver and one bench driver. From Group B you pick two starters and two bench. From Group C you pick one starter, one bench. On Yahoo they do have driver stats and expert picks that you can use from race to race - though it don't necessarily mean a great finish

(Here is an example of what a roster may look like:
Group A: Jeff Gordon (S) Jimmie Johnson (B)
Group B: Dale Jr (S) Jamie McMurray (S) Ryan Newman (B) AJ Allmendinger (B)
Group C: Michael Waltrip (S) Paul Menard (B))

*For starters, you can only use a driver nine times (Bummer, I know. I'd love to use Gordon all 36 races...oh well. )

That is all I can think of as rules right now...I find it fun and entertaining. It gives me more than just Gordon, Johnson, and Jr to follow throughout the whole race.