Which way to My Data Sources?

[Mr. Forgetful]

This might stand up as blinding stupidity of the year with an Excel 2007 document -- I closed a sizeable contact list when everything on it had been deleted.
Because it was a routine save and close, Excel did not auto-save a copy.
So what to do? I DO have a portable hard drive that backs up the Documents twice a week and the Contact List is located in C:\Users\My Data Sources. But I can’t find this folder or the contact list on the backup hard drive.
Can somebody remind me where the check box is in Vista to keep certain files invisible?
Any other suggestions, except those relating to a brain transplant, would be welcome.

 

[mole999]

from explorer > tools > folder options > view - hidden files and folders

 

[Mr. Forgetful]

Thanks -- Still looking in the backup folders.