Sorry to keep this up. now this is odd! I can successfully move an apple application from my memory stick to the desktop. so thanks for all your help it was the fact that I didn't deselect the highlighted file in the folder etc.
but another thing is that originally I was trying to move from the memory stick to the applications folder . even when trying to move it from desktop to appps folder it will still not paste in to the apps folder. hope you can make some sense out of this .
