I need help getting my amp sims ive downloaded onto reaper.

Ive got all my amps sims in a file called reaper file. Theres about 8 sims in there now. Ive gone into options>preferences>Vst and set my file path to reaper files but when i hit rescan and apply when i got to add the sim to a track i still get nothing?

I Honestly cant see what im missing here?

Any help would be great as i cant get any kinda distortion tone through the pre loaded amp sims.
You should have a folder called Steinberg in your Program Files section of your computer, try placing the .dll files in there.