How to hide the invoked window when using task scheduler and verify user?

[jchli...@gmail.com]

1) I am using Microsoft Task Scheduler 1.0: ITask::SetApplicationName
to set application name. However, my urgly console applicatoin will
always be invoked which is not necessary. Is there some way that I can
hide it?

2) I can use CredUIPromptForCredentials to ask user to enter user
name / password. But how this credential info be authenticated (user
name / password to be one user of the admin group?) This is a desktop
application.

Thanks.

Leo