Populating a list of variables with User account names

Greetings all,
 
First of all, let me apologize for newbingly not knowing where to address this question properly, as I'm somewhat "green" behind the ears when it comes to coding. I have a feeling that the answer to my question is very easy, but I'm tired of fighting it. A friend gave me a few basic batch/VB scripts a year ago, and I've been hooked on it ever since.  
 
The issue I'm having revolves around a batch I've written to collect User profile data on retired workstations in our organization. These are all WinXP SP2 or SP#.   I use it to copy over their data from: My Documents, Favorites, Microsoft/Signatures, Outlook profiles, and a few other locations to a backup server location.
 
The issue; How can I go about creating a variable list from the local C:\Documents and Settings\%Username% dir?   I have it setup to run manually (as a SET /P %var%= ), which is fine, but some of these PC's have a lot (25+ profiles) on them. I'd like to create the list and loop the command to run the batch for each User profile.
 
My experience with Command-line is far greater than my VB experience, but I'm open to using/calling any script to accomplish this task.
 
Any help or advice is greatly appreciated, and if I need to elaborate more I will.
 
Thanks,