Gauges not working and video recording

I have noticed many of the add-on aircraft have gauges that don't seem to work; at least on my sim they don't. I get alot of warnings for each gauge telling me it's a FS98 version and not supported. These are supposedly aircraft meant for FSX but the gauges apparently aren't. Why is this? Does anyone else have this problem? What can be done about it?
Also, I saw a control in the settings for recording start/stop. What kind of recording is this? How can I make it work and if I can make it work, how do I view it?
Also, I saw a control in the settings for recording start/stop. What kind of recording is this? How can I make it work and if I can make it work, how do I view it?