Thanks to both of you; Linux does sound like a good way to do this, as the file will no longer be protected. By the way, here is the 'dism' entry in the log file, with directory path and file name:
(p) CSI Payload Corrupt amd64_microsoft-windows-skydrive-exehost_31bf3856ad364e35_6.3.9600.17230_none_77e98b2afe9223f9\SkyDrive.exe
David Bailey, that's one of the places I already found, but 'disabling' it isn't likely to remove the files? If I could delete it, then maybe - but from what I've read so far, I'd have to remove Internet Explorer to do that.
I've only got one week left before I move from Madurai to Pondicherry, so maybe I'll just leave it as-is until my next visit.
Quick question - if I boot into Safe Mode, with DOS prompt, does that in any way start "Windows"? I've already found how to go to a "long directory name" (put it in double quotes). If my memory is correct, I think I could then use the "attrib" command to remove any system permission it had, change it to "rw" instead of "r", and then rename it. I guess if I want to do that, I should first do whats in the link David Bailey posted before the change, so presumably nothing on the PC will be trying to find "skydrive".
.............................or just give up, and refresh Windows.