In case of confusion C Maps are for the stand-alone client for Windows/Linux and Flash Maps are for the flash client.
If you don’t know how to install the map files follow one of the guides.
If you can’t figure out how to install the map files your self i made a small tool that does it for you.
All you need is the download the C Maps above and place them in the same folder as the installer and run it.
Tibia needs to be closed.