Virtual cockpit rain fix for FS9 addon aircraft
Backwards compatibility of FS9 addons in FSX has been an issue. One problem that bugged many was that virtual cockpit windows in some FS9 addon aircraft may become opaque when it rains. Two solutions are offered:
Solution 1: Microsoft outlines a procedure to utilize FS9 textures in FSX. EDIT: this link is now dead.
Solution 2: Flight1 provides a free tool to implement their own replacement textures.