Problem saving .prt with assembly

Hi !

I'm asking your help because I've a problem when saving my assembly. It's created of 4 parts, allready created, and which are in 4 different folders. When i save my assembly, I'd like to save it ine a 5th folder and keep all the parts in their original folder. However, all the parts are copied into the 5th folder (those of the assembly saving).

Is it possible to do what I want ?? If yes, how ?!

Thanks a lot for your very appreciate help !

L.