Communication Between MS 2003 CA Server and Client - Non active directory environment :Design Query

Question

Hello

I have a scenerio where the CA and its clients are not in an active directory environment(win2003 enterprise). They are located physically apart(different places).

For example,

*If the domain name is 'ExampleBank.org'*
*The CA name is 'ca.ExampleBank.org'  *
*CA type is Enterprise Root CA (online) [windows 2003 enterprise server]*

1. How will the certificates/CRLs be distributed by the CA in such a non active directory environment?
2. How will the clients send their CSR's to the CA?
3. Will ICERTREQUEST2 interface be usefull under such a scenerio to send a request to CA? (Submit call)
4. Do i need to look at LDAP approach?

Thank you
Raj