kremisos26: It sounds like this is using an embedded IE window to display the linx.htm file. So they would be opening in IE because they were opened from IE. I think I've seen it said that sufficiently recent versions of IE might use the default browser, but I have no idea.

CarLBanks: Open an explorer file manager window and navigate to the desktop. If there's an IE shortcut there, delete it and !recycle. If not, you'll have to edit the theme's .rc files... search the theme's folder for .rc files that mention iexplore, and try putting a ; at the beginning of each line that does.