My topic says it all, but I'll expand a little in the hope that some kind soul can shed some light on my possible route to success.
I downloaded both the 5.8 SOHO edition & the newer 5.9 Standard editions of this distro. I've decided that XFCE doesn't suit me well but KDE seems to do what I want and I'm familiar enough with linux I know how to do most things that I need to have done. I can edit config files and read info pages to hack my system into whatever I need it to do (generally speaking anyway, I'm hardly a guru).
However, being new to Vector itself I thought I'd find out if its worth trying to take the packages off the SOHO disc and use them on a system running 5.9 Standard. Specifically, I wanted to avoid having to download 200mb or so of packages from the repo's just to get KDE onto a standard 5.9 installation, when I have a cd sitting here with (presumably) packages I can install just as easily. I'd hazard a guess that even if this were successful, I may have to update KDE from the repos to plug security holes or bug fixes, which isn't a big deal but is going to consist of less downloading time than getting all of it to install in the first place.
I hope this is clear enough of what it is I wish to do. If not then I'll repost and try to unmuddy the waters.