Clustered IIS fails after IP changes

I have two Windows 2000 Advanced Servers in a fail-over
cluster with external disk array running RAID. I have
clustered the IIS and it has been working fine on both of
the nodes (it is Active/Passive, one node preferred owner,
the other one for failover).

I had to change the IP addresses for all of the nodes and
put new Virtual IP addresses for every clustered website
in the IIS. After the changes the proffered node still
works fine, buyt the second node does not display the
websites.

It looks like it fails over fine, it takes ownership of
the IIS Recourses and IIS Cluster Group, but it does not
display the websites.

Any ideas?
Please help,
Nerses