excel save as

This is a 2 part question:

1. I have a VI that writes data to excel but i want to leave my original file intact and save as different name, i keep getting an error

2. for the new name i want to append a timestamp but cannot find how to get the PC current time

any help would be appreciated, i've attached the VI and a sample spreadsheet

i'm using LV 2012 and office 2007