A keyboard layout refers to the way characters are laid out on a keyboard. Layouts vary from country to country, depending on the linguistic and other typing-related needs of that country's population. The following is a list of nodes that describe or show various countries' keyboard layouts:
Windows users can create their own keyboard layouts. See http://www.microsoft.com/globaldev/tools/msklc.mspx
Another good place to check out would be Special Alt key characters & accents - for both PCs and Macs, with some Unix stuff too!
I'll be happy to add your node to this list. Just /msg me.