Ordinarily I'd prob have an answer for you.
But here is a specific case.
I've used linux, used xp, even used win7 to share files with my n800/n810...
I don't like win8 ..it isn't a political thing ...it's how friendly or not it is...
don't like the interface,
don't like anything about it.
I've helped friends with their win8 systems...
and ...
I will never ever ever ever use it.
In fact I refuse to upgrade to it or anything following down their determined path to perdition. I find as things are ...to try to keep a modicum of personal control over even my last xp (I naturally don't connect it to the web and I screen whatever I put on it) and for my last win7 system... the same measure of really irritating time must be taken nowadays to keep it clean and running smooth. I'm not interested in going down the win8 road nor their nth release road anytime soon. I pretty much migrated away and use my xp and win7 for specific tasks...or run a needed prog in wine or play on linux or even run xp or win7 in a vm. But no ...
And even win7 was persnickety for a while with me and my n8x0's ...
Humhumhum... I'm not even sure how many n8x0 users utilize win8 with their devices...if you are lucky possibly 1 ..2 maybe.
Wish you luck jakfish...
Let us know if you do figure it out though...I am curious exactly where the "wall" is in the win8 stopping you from utilizing the file sharing...