OkayKeybees 
OkayKeybees is a freeware keyboard remapper with a twist. You define what keys are always replaced or what keys are replaced only when a user defined modifier key is held. You can effectively "move" keys to either side of the keyboard or even effective disable keys (like the Windows key).
No installation program is needed.
Download
OkayKeybees v1.0.4a [400 KB]
Requires a Windows OS. Untesed on Win9x, so your milleage may very.
Changes in 1.0.4
Fix: left shift key ignored on some systems
Fix: workaround for using shift key as a modifier key without having the replaced key simulated with shift held
Changes in v1.0.3a
Previous ZIP file was missing a DLL.
Changes in v1.0.3
Fix: Program correctly terminates when user logs off or shuts down
Fix: Some punctuation keystrokes not working for replacement
Changes in v1.0.2
Fix: Numlock keys mislabeled in interfaceFix: F1 thru F12 mislabeled in interface
NO WARRANTY
ANY USE BY YOU OF THE SOFTWARE IS AT YOUR OWN RISK. THE
SOFTWARE IS PROVIDED FOR USE "AS IS" WITHOUT WARRANTY OF
ANY KIND. TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE
SOFTWARE'S CREATOR DISCLAIMS ALL WARRANTIES OF ANY
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, WITHOUT
LIMITATION, IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
THE SOFTWARE'S CREATOR IS NOT OBLIGATED TO PROVIDE
ANY UPDATES OR UPGRADES TO THE SOFTWARE. THE INCLUDED
SOURCE CODE MAY BE MODIFIED AND DISTRIBUTED FOR NON-PROFIT
USE ONLY.
ANY USE BY YOU OF THE SOFTWARE IS AT YOUR OWN RISK. THE
SOFTWARE IS PROVIDED FOR USE "AS IS" WITHOUT WARRANTY OF
ANY KIND. TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE
SOFTWARE'S CREATOR DISCLAIMS ALL WARRANTIES OF ANY
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, WITHOUT
LIMITATION, IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
THE SOFTWARE'S CREATOR IS NOT OBLIGATED TO PROVIDE
ANY UPDATES OR UPGRADES TO THE SOFTWARE. THE INCLUDED
SOURCE CODE MAY BE MODIFIED AND DISTRIBUTED FOR NON-PROFIT
USE ONLY.
Instructions / Notes
Define keys you wish to always replace or those your wish to be replaced only when a key is being held down (modifier key). While the Configuration window is open, no keypress replacements will occur.
Keys are safely replaced at runtime and no configuration changes are made to the operating system, so OkayKeybees will not interfere with anything important - like the login screen. The program can be easily temporarily disabled or closed by clicking on the system tray icon.
OkayKeybees uses a global hook to replace keyboard messsages. While some users may never have any problems with them, Microsoft does not recommend their use since global hook programs can conflict with each other and can hamper performance on slower systems.