how to change dates from exported spreadsheet in XL

السلام عليكم ورحمة الله وبركاته

Hi to all,

i exported my project in Spreadsheet (XLS) format.

In that XL format the format of date is like that - ’9/3/2007 8:00:00 AM.

But i want to change these format in like this -
03-Sept-2007.

So from where i hv to change these dates from Primavera or XL.

regards,,,,