Gone!
MBAM cleared most of it but the rogue folders kept returning on boot. A mate sent me a link to 2 'new' av progs, Panda 'Cloud', an AV prog and Norman 2009 Malware cleaner (site nicely on a USB stick!). Norman does not need to be installed.
Panda required uninstallation of my (Avast) AV which I did and ran Panda Cloud. It found and cleaned a few entries. I also ran Norman which found more.
This am I have NO return of the folders. A MBAM scan shows me uninfected. I do not know which of the 2 'new' ones fixed it, of course, but I prefer Norman as it sits with the AV running. I'll add links to my forthcoming links in the sticky for both.