Ever since I installed FS9 on Win7, I haven't been able to add my scenery with the exception of the Mega Scenery packages (pretty much .exe files). Every time I try and add an area, I highlight the desired folder and click OK as usual but instead of it showing up on my list, it goes into the folder

any help would be appriciated
NEW RIG: i7 950 @ 3.2GHz. Gigabyte GA-X58-USB3 mobo. 6GB PC3-16000 DDR3 2002MHz. GTX 560 Ti @ 900MHz/1GB @ 2000MHz. Asus D2X PCIE. 4 HDD @ combine 1.9TB 7200rpm x3+SSD x1