Rikki,
Plugsounds Keyboard collection is a software sample module that works as a VST, DXi, and Rtas plugin. Forte hosts Vst plugins I believe ? If so than you would open it there. There is no standalone capability.
It would be pretty much for use as a lead voice, as there is no midi patch / bank change recognition. I use it because the pianos sound very nice to me. You know how subjective sounds are though...
Here is the link in case you are interested:
http://www.usbsounds.com/usb/exec/plugsound1 Regards,
AJ