>Hi Sergey,
>
>Thanks for the reply.
>
>The problem occurs when I click the process button the 2nd or 3rd time. The virtual memory buffered on the first click is not being cleared, so the next time I click the process button again, the virtual memory will just pile up which causes my pc to hang.
>
>is it possible to purge the virtual memory(Page File Usage)?
>
>Thanks again...

Not directly. See my previous message.