Ensure your Mac has ben set up with a <countryname> PC keyboard profile in preferences.
Then edit (or create) the file ~/Library/KeyBindings/DefaultKeyBinding.dict
{
"\UF729" = moveToBeginningOfParagraph:; // home
"\UF72B" = moveToEndOfParagraph:; // end
"$\UF729" = moveToBeginningOfParagraphAndModifySelection:; // shift-home
"$\UF72B" = moveToEndOfParagraphAndModifySelection:; // shift-end
"^\UF729" = moveToBeginningOfDocument:; // ctrl-home
"^\UF72B" = moveToEndOfDocument:; // ctrl-end
"^$\UF729" = moveToBeginningOfDocumentAndModifySelection:; // ctrl-shift-home
"^$\UF72B" = moveToEndOfDocumentAndModifySelection:; // ctrl-shift-end
}
Reboot, and your home and end keys should be working perfectly!