Thank you Urs!
I dont know if this is the right bgl... the path is - E:\Microsoft Flight Simulator X\Scenery\0601\scenery\APX52140.bgl
I use Flytampa Vienna and the files for it are in the Flytampa folder in my FSX installation, so I think it is not using the right one.
How can I change it? (couldnt find a solution in the manual if the bgl is wrong)
Regards,