All I know is that I get a UAC prompt whenever I open the second instance. According to Wikipedia, the following events will throw a UAC prompt:
Running an Application as an Administrator
Changes to system-wide settings or to files in %SystemRoot% or %ProgramFiles%
Installing and uninstalling applications
Installing device drivers
Installing ActiveX controls
Changing settings for Windows Firewall
Changing UAC settings
Configuring Windows Update
Adding or removing user accounts
Changing a user’s account type
Configuring Parental Controls
Running Task Scheduler
Restoring backed-up system files
Viewing or changing another user’s folders and files
Running Disk Defragmenter
Running Registry Editor
Running the Windows Experience Index assessment
I figured that the bolded one was the only one that seemed plausible to me. At any rate, bigeastro should be able to get it to run if he gets his UAC settings sorted out.
Tim