hum you should had asked for help then... something must have gone wrong with the instalation then

you could try again, you shouldn't have any problems...

and about the "save" thing... you mean when you're downloading?, just save it in your desktop, this will give you a rar file in wich you can find the minimod.

you may want to tell me the next things in order to help you to use the new skins

are you using TWfanatic phalanx mod? or any other mod that moddifies the EDU?
are you using alex.exe?
are you using an aquilifer unit?