VS 2008 Detect the difference between A and a

Hi All,

I have for a long time trying to detect the difference between the Chr "A" and chr "a"

I can not use Shift to detect this difference as the Keyboard send it though either as a Capital A or lower case a

is there anything with in the Keys. functions that would detect the actual text of the Char being sent?


The reason why I need to do this is at the moment I have

A = Sign On
a = Grocery but if the user Press the grocery key the Till displays the "do you want to sign off" question