Problem with the sceneries in FS2004

Hi all!Are the anyone that can solve the following problem:When flying at high altitudes the scenery appear like squares,- with other words when looking at long distances from the aircraft it all get very blurred or "foggy" (Hope it was understandable..). I have seen q a lot of screenshots where it is all "reallife clear." How can I remove the "foggy" squares into borderfree and clear scenery?My pc:Intel Core 2 quad q6700 2,67 GHzGeforce 8800GTX4 GB RI have installedFS Global 2008Ultimate Terrain Europe (FS2004)