IIS 6.0 on MSCS Cluster on Win Server 2003 machine

I am facing a problem clustering IIS6.0 on two Windows Server 2003 machines
in MSCS cluster. The issue is that my customer chose to put the IIS and SQL
Server on the same box. Hence the SQL server 2005 is setup as a MSCS cluster
on 2 windows server 2003 enterprise machines. Now he also wants to cluster
the IIS 6.0 using the same MSCS cluster. Can this be done? Can anyone point
me to a step-by-step tutorial on how to do this? I have seen a lot of
articles on IIS NLB clustering, but I cannot find anything on how to cluster
IIS using MSCS. Thanks.