...Dimension Pro (from 32 to 64 bit)! First the expansions packs wouldn't show up in the browser. Yes, I've tried F5 several times. Managed with scopko's help to link from C: to a SATA-drive E: where I also put the exp packs. It works fine with the original sounds. Tried also to make the registry to point to that folder but again... Installation program really doesn't give any options where to install the library unless maybe if not doing installations, first with just the Vsti-synth (with "Multisamples" unchecked) and a second one with the Vsti unchecked. I haven't tried that yet.
edit: I did - no success. BUT the inbuilt uninstaller worked ok and finally I realized there really was an option for installing sound libraries on another hard drive. I just wasn't aware of the terminology, "multisamples", in Dim Pro.