w0w, what a totally unoriginal and lame idea. anyway, i think u would just have to change the logo using the properties tab to whatever-image- format-u-want logo, they are all located in windows somewhere, just look around. on the extension, i know that if u have certain kind of file windows will hide the extension. like .vbs can be hidden by changing to file.jpg.vbs, but i dont know if it can be applied to .exe or if it works with XP or NT versions of windows.