VBA code to click and double click

Hi

I want to click on a cell once and it places a "T" in that cell but if i double click it places a "A" in that cell..The range is A7:M125..if i double click on a cell and it places the "A" but i need to change to "T" i can then click on that cell once and it will change from "A" to a "T".....if i want to remove a letter i just hit delete key.....is this possible with VBA code?

Thanks

James

Yes it is, on the Worksheet Events in VBA