CA et GPO, Certifcate Revocation List

Hi,

I have just installed a stand-alone CA. For security, it is a stand alone
server. not integrated in my local domain.
Domain users use outlook (2000, XP, and 2003) as mailer software.
Is there a way to force Outlook to consult the CRL, published by ma
stand-alone CA.
Can I publish revocated certificates in my Active Directory or in share
directory ?
Can I use GPO ?

thanks for your help.
fabrice