i am using some libraries and i added a reference to that library dll and i set the \"Copy Local\" to true.
but i want to change the location of the dll to be a subfolder in
Do you need it as a reference? Or is the reference only to copy the dll to the desired location?
If you do not need the reference, try adding it to the project and setting it to always copy.
Add the dll to a folder in the project and set to Copy to Output Directory http://web11.twitpic.com/img/146848312-ecfdeadf5b322fe755c7a764d6e6dbf0.4c69c2f0-full.png