Single Login Across Domain and subdomains?

Hi,

I've seen a couple posts that touch on the topic, but I haven't see one that gives a hard and fast answer.

I use CB 1.2 RC3 and Joomla 1.5.7 with only native extensions. Is there a 1.5 native component available that allows users to browse multiple subdomains on a single login that still maintains a connection with the CB user profile at the main domain?

Any thoughts are appreciated!

Ryan

i don't have an answer but thats exactly what i am looking for

is this possible Nant?????