Using variable/wildcards in a Windows Filesystem Dataset

Hello Everyone...

I'm setting up a dataset for our desktop/laptop Windows users.  We need to backup the entire C:\ drive of everyone's desktop/laptop.

So when I'm creating the dataset, I select Enter Explicitly.  Under Select Plug-In Type, I choose Windows File System.  Then I check Select Files and/or Folders:  Here I enter (for example) c:\Users\dlemley\Documents.

What I'm trying to accomplish is this; I want to replace "dlemley" in the path above and set some sort of variable or wildcard.  For example...when you are in Windows and go to Start>Run, you can type c:\users\%username%\documents and it will open the logged in users' documents folder.

The %username% variable does not work in Avamar as stated in their Systems Admin guide.

Does anyone know of another way to accomplish this?

I don't want to back up the entire C:\ drive as previously stated and I don't want to create a new dataset for every user.

Any help would be greatly appreciated.

Thx,

Dave