Schedule task to run when a new profile is created using Win 7

I need to replace a RunOnce procedure from XP. Using it with Win 7 is interrupted with UAC prompts which is an unacceptable option and disabling UAC within our environment is not an option. I am attempted to replace the process with Task Scheduler. However, I only want this to run when a new user logs on to the PC. I am open to other suggestions if this can’t be accomplished through Task Scheduler, but the solution can only run when a new profile is created.

Originally the RunOnce from the default profile was used to launch a local VBS which ran three batch files which edited the registry when a new profile is created.

A new key is added to HKEY_Current_User\Software and then three more are added to that key. If you need more info let me know.

I can get Schedule Task to launch my task when a new profile is created from a batch file in the Runonce of the default profile. However I am still getting a UAC prompt due to the registry writing. I have the task set up to run using a System account but I still get prompted. Any suggestions?

According to this website Schtasks - Scheduled tasks | SS64.com I should be able to create or run a task and use /RU to use a system account. The site says "For the system account, /RU username can be written as "", "NT AUTHORITY\SYSTEM" or "SYSTEM", a Password is not required. The system account has full access to the local machine", yet I always get prompted for UAC approval. It doesn't ask for credentials, but I do have to repond to the prompts. Any assistance will be appreciated. The task writes a key to HKEY_CURRENT_USER when a new profile is created via a RunOnce batch file.

I am trying to use the above recommendation but I need the shortcut to run using a system account. Here is the part I need assistance with. "runas /user:Brink-PC\Administrator /savecred " Below is the entire line.

runas /user:Brink-PC\Administrator /savecred "C:\Program Files\CCleaner\CCleaner.exe"