I have been able to remap the CapsLock key (3A) to the Left Shift key (2A) by adding the binary value HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout\Scancode Map
to the registry with a value of:
00 00 00 00 00 00 00 00
02 00 00 00 2A 00 3A 00
00 00 00 00
How can I modify this value so that the key remaps to a multiple-key combination, for example Alt-Shift?