unable pinging to remote pc

mmj_at_sggs.ac.in
Date: 07/12/04 

Date: Mon, 12 Jul 2004 04:41:54 -0700

dear sir,
   I have a local LAN for about 40 pc's connected thru
10/100 fast ethernet dlink switch.
   The remote systems having same workgroup & subnet mask
connected on the same switch are visible in my network
places( all pc's are having windows2000 prof as an os)
One of them Pc is using IIS for some application.
   The system having IIS is able to ping remote pc but
vice a versa is not possible.I tried with host name,ip
address the result of pinging is remain same.
   So I request you you how to trace & remove the problem.

mmj
sggs