Server 2003 Certificate Services

Good Morning,

I'm fairly worried about using Certificate Services in Server 2003 as

previous attempts have caused problems with service packs and updates.

It always seems to give a 'Integrety of Update.inf could not be verified...'

I'm looking to install OCS 2003/2005 and am aware that this uses

certificates.

1. Can you install an OCS instance without using certificates

2. If not, how can I avoid the issue above and proceed with installation of

OCS

Adam