expiration date on published file

I am running into another issue when I put an action at the title level to display a message stating that the file is expired. As described above, I added an action On show, Go to Page (with expiration message) with the condition CurrentDate, Greater Than, September 24, 2006. This works fine, since we are past Sept. 24. Realistically the program won't expire for at least a couple months. So if I change the date to Greater than October 1, 2006, it still displays the expiration message when it should let the user go to the password page and begin the program. However, when I enter greater than September 30, 2006, the program works as it should and the user is directed to the password page. So it seems as if the program only recognizes numbers in the variable CurrentDate and not letters, therefore it does not recognize the order the months come in. The date is set correctly on my PC. Any way around this? Or am I completely missing something?