I installed the plugins CD and the sounds DVDs fine. In my Philharmonik folder I have a .dll file as well as the standalone and .vpa and .xrs files. I copied the .dll file into my VST folder and as Obik said scanned for new VSTs but when I tried to load Philharmonik up in FL Studio an error occured and this happened every time I have tried to open up the plugin.
In the Sonik Synth, Sampletank and SampleMoog, SampleTron folder I don't have .dll files, just the .xrs and .vpa files. I'm not sure what to do with these files and I cannot get any of the above plugins to be recognised by FL Studio.