Jbolo and subdomains

Hi,

I would like to know if it is possible to configure Jbolo so that it works across subdomains.

I am intending on setting up a network of websites whereby when a user registers on a subdomain of the network they are also added to the registered group of the main domain website.

In this circumstance would it be possible to setup Jbolo on the subdomains so that the users are pulled from the root domain website. Thus allowing all the users across the network to use Jbolo to communicate regardless of which subdomain they were on?

Thanks in advance for the help.