How to create kneeboards in DCS
Create a folder in c:/users/yourname/SavedGames/DCS.openbeta/KNEEBOARD, and give the folder the same name as the plane you want to create a kneeboard for. For example if you wanted to create a kneeboard folder for the Hornet, add a folder called "FA-18C_hornet".
It should look like this: c:/users/yourname/SavedGames/DCS.openbeta/KNEEBOARD/FA-18C_hornet/[Paste Kneeboards]
Create an image file with the info you want, and drop in into that folder.
In the game, you may bring up the kneeboard by holding "K" or toggle by "Shift+K", then you may cycle them using the bracket keys "[" and "]" until you get to the image you put in the folder. If it's not in there, you might have named your airplane folder wrong.
Make sure any image you use for a kneeboard is a .png not .PNG