Too many issues in a single post....

Featured - You state that you have changed this but apparenyly not in the correct place as it did not change -

What files and path to them(what folder are they in?) did you change specifically?
1) Login form in the right sidebox.
Check in the downloads/sideboxes area for this
2) On individual product pages I want to have up to 6 thumbnail images, and one larger image. I want users to be able to mouse over on a thumb and have it change the larger image on the fly. I am guessing some CSS is needed here.
Not css but some js - Look in the downloads/other area for the swap image contrib and read the instruction and look at the code as I believe that this will do the basic function but you might have to tweak it for your intended use