R help - Nov 2003 - How to handle multiple thread using (D)COM server

Hi ALL,
      I am trying to produce ASP web reports using (D)COM server. The
problem I am facing is (D)COM server cannot allow users accessing to R
project concurrently, it need one by one to execute ASP.    Same thing
happened in VB application. I can not run two VB apps at same time.
      Does anyone know whether it is (D)COM server limitation or
configuration issue at my (D)COM server? Thanks in advance!

Best Regards,
WeiQiang Li