An interesting turn of events. I actually found a file that contained a number of styles (including the KVE one. Yay!), but not all. I appears to be in a presets file from some earlier incarnation of PSE. And the styles had that dog-eared paper looking icon that meant they could be loaded into my PSE 11.
Don't know why it's there, don't know why it doesn't contain more styles. Ours not to question why...
Ours just to be grateful
Thanks for all your help, my Dears!