How can I stop it ?

From: 加其 (huangqi0527_at_163.com)
Date: 04/14/05 

Date: Thu, 14 Apr 2005 11:08:33 +0800

HI,everyone:
    I have a harmful problem:when my friend put "\\10.3.0.50\d$" (the
address is IP of my computer)in his IE,and he could visit the patition D in
my computer,though I have shaped nothing.
    How can I configure my computer so that nobody can visit my computer
without my permission,please?