NIOCApi

I have a computer that I let my kids use to get on the computer thru a
wire less connection. I have a d-link wireless router (di-514) and the
computer uses a d-link dwl-520 pci wireless nic. My problem is that I
want my kids on limited accounts. With limited accounts they get this
very annoying pop up error message. It has NIOCApi in the title bar and
in the pop-up window it says "Fail to open service control manager!".
My oldest daughter (10) uses the computer often enough to, at least
seemingly, become tolerable of this, but I can't take hearing the error
beeps!!
The OS is windows xp home sp2. And this message only happens on limited
accounts. I figure there should be a setting somewhere but I can't find
it and d-link tech support offered me the solution of making my kids
administrators (AAAUUUUGGHHHH!!!! I just redid this computer because
they download too much crap and install it!).

TIA
Damase