Server 2003 -
find which web site is killing the server - http://www.powerasp.com/content/new/which-process-ID-belongs-to-what.asp
iisapp.vbs
Server 2008 -
%windir%\system32\inetsrv\appcmd.exe list wp
Article ID: 50, Created On: 5/11/2010, Modified: 9/13/2011