IL2 CloD: Benchmark your system!

[tranquillity]

yes I do have the steam version.
there somewhere must be the problem,
i can not record a track myself!
just tried to do so in a the free channel quick mission, but when I press start recording "single mission" greys out and I can't do anything. when i click, i hear that typical windows 7 error sound.
could it be admin permissions or something? is that a known bug with steam?
sorry for my english btw i'm german.