How to Prevent UAC warning?

That's what it's suppose to do. It's there to protect your PC from unwanted programs running without your knowledge. In the long run, if the program is for unattended production use, you should not disable it.

When not running as a real administrator, your running a virtual windows using Vista and Windows 7.
The real windows is 2 levels up from that. The virtual windows can only read and write to a couple of places on the hard drive, and can only run programs within itself.

When you elevate, the screen sort of blanks out and a new screen appears that looks the same, now your not running in the virtual windows anymore, and can access more of the hard drive, and run that external program.

There's one more level above that, that's like running XP as administrator with full control.

For me, after messing with UAC for about a year, reading hundreds of articles on it, I determined to just play nice with it, and to use the UAC prompt.

So you call the prompt, and it the user accepts, you can run that external program, if not, the program won't do that feature.

You have to design your program in advance, with UAC in mind, and perhaps rewrite that script if possible to play nice at the lowest level.

http://en.wikipedia.org/wiki/User_Account_Control[UAC ^]

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I didn't see that your from China, and are not interested in the protection of your PC.
just joking