Outlook Anywhere Configuration in Exchange

Hi,
I would like to configure OUTLOOK ANYWHERE IN EXCHANGE 2003.
We have Exchange 2003 in windows Cluster mode. Can you suggest me how to configure outlook anywhere in Exchange 2003 cluster mode?
Also, Is SSL certificate is mandatory to get it installed? Is any temporary SSL certificate can be generated to furnish the installation testing for the time being?
Thanks & Best regards, Bipin
