LaserSoft Imaging

I have downloaded demo version of Silverfast SE. Works fine with my Epson V600 scanner. However, I like to get it into my Photoshop CS5 as a plug-in. Will the Demo version do it or I will get the plug-in after purchase? I like to see it working before purchase. (I had previously CS2 and older version of Silverfast, worked fine. This is a new PC and a new Photoshop)

Dear Customer,
you can test the demo version from within Photoshop CS5 as well as stand alone