How do i increase the filesystem size on a root partition?

There is a slice with root on it, its like 2 gigs and nothing else is broken out except home.

I want to increase root filesystem (and slice) and break out /usr and /var.
This is solaris 9, only has solaris volume manager on it.

This system has 2 disks on it, the 2nd disk is not used at this point so i can use it for a swap space so to speak.

anyone care to point me in the right direction?
Thanks!