Looking for the right tool...

Hi,
I am looking fo a tool that will level the ground around an airport that was created by Microsoft in FS2004. If you take a look at airfield FNBG, you will see that it is actually under ground level, but it was constructed accordingly to the real world, so the problem is the ground by itself, no the airport.
I just installed AFCAD 2 for FS2004 but I figured out that if I raise the altitude of the runway and of the airport by itself, some parts of the runway are either underground (so not visible) or above ground (like floating) and that is because the ground is not leveled. In Lee Swordy's file, he says that you cannot set an inclination to a runway.
So, I'm trying to find a tool that will allow me to take what already is in FS2004 and lower the ground and make it leveled around the airfield, but I can't find one: they are either made for creating an area from scratch or are to add a texture to the ground (which I don't want to change).
Have any suggestion?
Thanks
I am looking fo a tool that will level the ground around an airport that was created by Microsoft in FS2004. If you take a look at airfield FNBG, you will see that it is actually under ground level, but it was constructed accordingly to the real world, so the problem is the ground by itself, no the airport.
I just installed AFCAD 2 for FS2004 but I figured out that if I raise the altitude of the runway and of the airport by itself, some parts of the runway are either underground (so not visible) or above ground (like floating) and that is because the ground is not leveled. In Lee Swordy's file, he says that you cannot set an inclination to a runway.
So, I'm trying to find a tool that will allow me to take what already is in FS2004 and lower the ground and make it leveled around the airfield, but I can't find one: they are either made for creating an area from scratch or are to add a texture to the ground (which I don't want to change).
Have any suggestion?
Thanks