Hi Trailboss.

Yes. They are right. You must have those files for you to be able to create scenery files (.bgl) and aircraft models (mdl). I do not recall installing them on my computer since I upgraded it in August last year. I have Windows 7 64bit and as far as I know they were installed when I installed the OS. Downloading and installing them can't hurt. If they are already installed then I don't think they will do anything except tell you that you already have them.

Note: I thought that Acceleration only had SP1a and SP2 for the SDK and not the SDK itself! I need to get the disk out and have a closer look. I have always install the SDK from FSX Deluxe, then apply the SP's from the Acceleration Disk. ;D

@harley1380: See the replies in the Topic you created asking the same question. ;)

Mark