black runway

[cleobis]

hi, my runways are all black! It seems ok when you are near, but after 20, 30 mtrs it goes black!!can anybody help me?it's not the drivers, I have no addons,  when I turn off the mipmapping it returns to normal, but that way the graphics are too bad!
thks  ???
system:

mb asus
p4 2,4g
nvidia fx 5600 256 mb
512ddr ram
40 g hd
directx9.0
sb audigy platiniun ex

[hiflyphil]

Hi  :)

I wonder if this is one of those direct x 9 issues.  ???

I've been hearing nothing but bad things lately. :-/

Regards

Phil