User accounts

A program for monitoring child's activities, Spector Pro, has a feature where you select Windows User names you would like monitored. When we first bought our computer 2 months ago, we put in everybody's full name. A couple days later, we edited them to first name only. (e.g. Windows name George Jones is now George). It appears Spector Pro is working when we put in the full name originally placed when setting up User names, not as they are listed now in Start/Control Panel/User Accounts. Is there a way the names as they appear to be buried in the system can be viewed and edited?