Current year in cell not 1900!!

I've conditioned formated some cells so that someone can type a number in and a date will appear in the cell.

Problem is if someone types 20 in the cell.. excel reverts back to Jan-20-1900

How can I get the current month and year when a number is typed in the cell?

Did excel exsist in the 1900?

SOLVED
Solution - I used the if command in A2 like this

=if(a1="",0,2009)

This was kind of a noob way of doing it but hey... I'm not real smart..