Welcome to the CS forums.
Is your FSX version current? You should have at least Microsoft® Flight Simulator X SP2 or Flight Simulator X Acceleration installed.

You can also check your DirectX and your drivers of the graphics card, but the FSX version would be the first thing to check.

Here's the DirectX link http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=3b170b25-abab-4bc3-ae91-50ceb6d8fa8d


When you install such trusted software like the CS planes, you should turn of your antivirus software (temporarily!) and give the installer the admin rights (right click on it) to make sure that it can access all things needed.

If you have further problems, please post some details of your system (CPU, RAM, graphics card vendor) and about your operating system.

Official support always comes with the use of a support ticket and therefore not from the forums.
So in those cases, log in to your profile on the CS page (http://www.captainsim.com/cgi-bin/login.pl) and access the knowledge database. If you can't find a solution there, generate a new ticket then.