For those of you doing slide scans during the summer, you’ll probably need to install Nikon Scan 4.0 since most of the computers don’t have it. The link is nearly impossible to find, so here it is.
Also, for those of you who would like Photoshop, but can’t afford it (most of humanity I believe,) you could try the Gimp, a freeware graphics program created by the University of Minnesota. It has almost all the functions of Photoshop and none of the cost. You can find it here.
I believe Brendan even pointed out they have a Photoshop appearance plugin so the layout will look the same.

The download Brendan had mentioned was GimpShop.