sailorhathor | Weird computer thing

Wanted to see if anyone knew what was going on with this thing my computer does and how to make it stop. The other day, I downloaded some picture tubes for Paint Shop Pro. They were enclosed in an .exe file. I installed them. Turns out a few of the actual tubes were repeats of tubes I already have, so I'd like to delete them. The original tube, for instance, is "snowflake," so I named the repeat "snowflake2." But when I open the directory the tubes are in, the new ones won't show up. (I can see snowflake but not snowflake2.) When I go to open them in Paint Shop Pro (just to make sure they're really there), I can see them, but their icons have a little lock over them. I went in and made sure that my computer was configured to show hidden files, and it is. So why can't I see these files?

I'm on Windows 7, if that helps at all.