Anyway, these days are over. Here is how to get a pretty standard PC-Style keymap alongside the old Apple bindings if possible:
1. mkdir ~/Library/KeyBindings (if it does not exist)
2. put the following text into the file Library/KeyBindings/DefaultKeyBinding.dict
3. Log out and log in (some apps like TextEdit pick up the changes directly when you restart them)
{
"\UF729" = "moveToBeginningOfLine:"; /* pos1 */
"^\UF729" = "moveToBeginningOfDocument:"; /* crtl + pos1 */
"$\UF729" = "moveToBeginningOfLineAndModifySelection:";
"\UF72b" = "moveToEndOfLine:"; /* end */
"^\UF72B" = "moveToEndOfDocument:"; /* ctrl + end */
"$\UF72B" = "moveToEndOfLineAndModifySelection:";
"\UF72C" = "pageUp:";
"\UF72D" = "pageDown:";
"^~7" = ("insertText:", "|"); /* orig alt 7 */
"^~8" = ("insertText:", "{"); /* orig alt 8 */
"^~9" = ("insertText:", "}"); /* orig alt 9 */
"^\U00DF" = ("insertText:", "\U00BF");
"^+" = ("insertText:", "\U00B1");
"~<" = ("insertText:", "|");
"~7" = ("insertText:", "{");
"~0" = ("insertText:", "}");
"~8" = ("insertText:", "[");
"~9" = ("insertText:", "]");
"~+" = ("insertText:", "~");
"~\U00DF" = ("insertText:", "\U005C");
"~q" = ("insertText:", "@");
"^x" = "cut:";
"^c" = "copy:";
"^v" = "paste:";
}
This gives you the braces, the brackets, the backslash, the pipe symbol, the AT symbol, the tilde, Home/End on PC typical key combinations. It also gives Ctrl+X, C, V for cut/copy/paste in addition to Command+X, C, V. Most of the Apple key combinations still work after this change, so Mac users would still find their way in your system. The most noticeable change is Alt+7 for the pipe symbol which is now the opening brace.
I got all the info from this german page:
Tastaturbelegung unter Mac OS X
which provides a very useful example keymap (which I extended a bit above) and a link to this great page:
http://www.lsmason.com/articles/macosxkeybindings.html
The latter one provides virtually all the background information you need to do your own keymaps.
Happy keymapping!