Wozzer, In Windows Explorer, look for the OpenCPN
folder / directory, then right click on that main folder to make a new folder which you will call "Charts".
Then, insert your chart CD and copy everything from that CD into the folder called "Charts".
Then fire up OpenCPN
and go to the "Charts" menu, point CPN towards the "Charts" folder, click on that as your basic charts folder, do the suggested refresh routine and you will find incredible detail on your screen
If you get stuck at any point in the process, feel free to give me a call, I'm currently in Norfolk UK so a call will not cost you very much. You can call me on my cell phone
which is 0776 683 1283 and since I have my laptop
fired up most of the time, I can probably help you solve your problems almost instantly.