|Hi WoodEd, thoughts:-|
Was there a driver with the keyboard?
If so, does it cover your os (which you have not advised)?
Note: usb drivers should be installed, before the device is connected.
What is the numerical sequence output, when you type:-
A thru Z
a thru z
Please expand:- 'it works fine with notepad'
is there a certain application or applications it does *NOT* work with, and others it does?
Have you checked *ALL* the settings in your control panel/keyboard for any obvious funnies?
Najitech's suggestions are good, it is definately worth trying a ps2 k/b.
As a matter of interrest, where are you based? I am in Hammersmith, West London.
Good Luck - Keep us posted.