I do have a machine with Vista installed, that I'd bought because I wanted to keep the XP solely for photography, disconnected from, and not at risk of itself getting screwed via the Internet. Consequently, the newer Vista machine was used for communication with the great out-there, though I did try to load PS6 into it, off the CD, but it wouldn't take PS6. Thus, I never tried the calibration device with it either. But it became very slow, and still is when I use it sometimes for old-time's sake. I get a notice telling me the battery is very low... The W8.1 now does the lot: photography and communication - I stopped being scared as I keep the important stuff that I can on a pair of external drives just in case!
Regarding the newer computer with Windows 8.1, when it arrived I was horrified: I couldn't work it at all, the desktop and everything to do with it was totally alien. Somebody on LuLa did me a great service and told me about Classic Shell, which I could download and would convert the system to 'look' like an older model of computer, and that's what made the thing workable for me. However, sometimes, if the pointer is swung off to the extreme right, up pops the damned original 8.1 interface untiil I move rapidly back across the screen. For a long time Microsoft was offering free upgrade to W 10 but I refused to bite: I was scared about what the hell next would become incompatible.
Now here's a question: is it possible to copy an entire C drive onto a second, spare C drive and thus have a working copy of everything, including one's version of Photoshop? I ask, because I've heard that solid drives are more likely to pack up than the old-fashioned type I have in the old computers. It would be reassuring to think that, in a disaster, I could simply have the drives replaced without losing anything and all the trouble involved in getting it all anew. Now you understand why I have no worries about feeling 'talked down' to: it's impossible. I do pictures, and not a lot beyond that.