Thank TFGBD for the professional advice.
Unfortunately I found that there was no aygshell.dll in \Windows. Tried to copy one from another PNA but failed. Pleae advise what I can do further.
By the way can TFGBD also help solve my problem with the Start menu? The problem was posted at
http://www.hpcfactor.com/forums/forums/thread-view.asp?tid=13476&po...