By permanent Notepad file, do you mean that it has a file extension of .txt? If so, make a backup copy and then remove the .txt extension from the original.
This may not be your only problem tho' - it could be that:
1) You're infected
2) That your niece has learned a way to workaround your precautions and has either hosed your system, or has downloaded something (which brings us back to 1)
I'd suggest these free, online scans for your system to ensure that your system is clean:http://safety.live.comhttp://housecall.trendmicro.com
If you come up clean, then we can delve further into the realm of how to prevent this. It's fairly easy to do - but the kids today are smart, so it'll be a constant battle!
My browser caused a flood of traffic, sio my IP address was banned. Hope to fix it soon. Will get back to posting as soon as Im able. - John
(my website: http://www.carrona.org/
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