hi i have installed JMS Multisite i have made a slave site "honoluluhi" i got the joomla installer and installed joomla in the dir i then made a template that uses the maer db because i want the users from the americasnightlife.com to be shared with the users from honoluluhi.americasnightlife.com so basically i want the users so when they navigate between the to domains/joomla sites to stay signed in. please tell me if this is right or if not how do i get this done.

YES to share the users, you have to create a JMS templates as shown in the tutorial video 16
www.jms2win.com/tutorial#jms12x-16

Concerning your requirement of Single Sign-In accross domain, as this is explained in our product detail, this is NOT possible.
The single sign-in only works when using the same domain name. In other words when you have slave site in subdomain or subdirectories.
See last sentence in the "Single Sign-in" section.
www.jms2win.com/download

So you when using different domain, you will be able to share the users but your customers will have to re-login.
They can use the "remember" check box to simplify their re-login.