Buy yourself a cheapy controller like a Logitech Wingman Rumblepad for 20 bucks from wallyworld.
You can map it's controls for BF1942 and use it for all flying vehicles, MUCH improved control. Set it up so you use it's sticks as rudder, elvator, roll control much like you could set up a R/C controller.
It will really improve the fine balance of heli flight once you learn how.
I personally really like Desert Combat, I go by "Squirrel Hunter" and play pretty frequently. The Eve of Destruction mod shows promise but right now it's jet aircraft are slow and annoying to fly. They have an excellent helicopter flight model though.
It's also very frustrating to play in ground combat, the darned guns have very strange accuracy quirks that are either part due to the mod or part due to the BF1942 engine.