Sorting date mm/dd/yy hh:mm:ss AM/PM in grid

Hi,

I have a grid with a column with dates. For example:
09/18/06 03:33:03 PM
09/18/06 11:40:09 AM
09/18/06 08:00:02 AM
I try to sort this column but it doesn't sort them correctly. It put them in the following order:
09/18/06 03:33:03 PM
09/18/06 08:00:02 AM
09/18/06 11:40:09 AM

I tried using setCellData and date.dataToValue but it didn't help. I see that it convert it to the correct numeric value but it still seems to sort alphabetic.

Need urgent help with source code that can handle this.

Thanks,
Yaron