From poide.exe
Exactly... Mine is "HighestAvailable" as well...
That's going to trigger the UAC every time, unless UAC is turned off.
I'm currently develping on Win7 and turning off UAC (Control Panel->Action Center->UAC) does stop the IDE from prompting. Of course it has to be turned on sometimes for testing software but for the most part it's pure annoyance, one of Microsoft's worst ideas (and they've had some doozies).
In my own code I almost always us the "AsInvoker" level. This requires no elevation from an admin level account and does not trigger UAC when my programs launch.
BTW... Pelles C seems to work really well under Win7... but is in need of up to date library and header files. It will compile successfully any level of windows api code up to XP-sp3 with it's current libraries, which is just fine considering that XP is still very much alive and well as the OS of choice for HTPC connaseurs.