Excel 2010 Calendar Option

Hi,

I created a spreadsheet originally in 2007, where i would be able to click into a cell and excel's calendar would pop-up. Code is below:

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Now that i upgraded to 2010, I heard that MS removed this funcitonality? I am receving the error message

Compile error in hidden module: Sheet1. The error commonly occurs when a code is incompatabile with the version, platform, or architecture of this application...

What is a good alternative? I am not that great at VB so any coding that you can post that is easy to follow would be great. Thank you very much in advance for your assistance.