You can use zonecfg to dynamically create a pool for your zone when it is running.
zonecfg:new-zone> add dedicated-cpu
zonecfg:new-zone:dedicated-cpu> set ncpus=1-3
zonecfg:new-zone:dedicated-cpu> set importance=2
zonecfg:new-zone:dedicated-cpu> end

The capped-memory resource sets limits for physical, swap, and locked memory.
zonecfg:new-zone> add capped-memory
zonecfg:new-zone:capped-memory> set physical=50m
zonecfg:new-zone:capped-memory> set swap=100m
zonecfg:new-zone:capped-memory> set locked=30m
zonecfg:new-zone:capped-memory> end

You can specify zone-wide resource controls as global property names:
zonecfg:new-zone> set cpu-shares=5

There are two new ways to set the scheduling class:

• You can use the new scheduling-class property in zonecfg to set the scheduling class for the zone.
• If the new cpu-shares rctl is set and FSS has not been set as the scheduling class for the zone through another action, zoneadmd sets the scheduling class to FSS when the zone boots.

The other new features in Solaris 10 7/07 and Solaris Express Developer Edition 5/07 include: Enhancements to rcapd and prstat and the ability to use the zonecfg command to configure the resource management settings for the global zone, and a new IP type in addition to shared-IP for non-global zones, exclusive-IP (dedicated network interface), specified in zonecfg:
zonecfg:new-zone> set ip-type=exclusive
zonecfg:new-zone> add net
zonecfg:new-zone:net> set physical=bge32001
zonecfg:new-zone> end

Some references for more information include: an advance copy of the System Administration Guide: Solaris Containers--Resource Management and Solaris Zones posted on the Zones community site, Jerry's blog on containers, and Donghai Han's Weblog on new IP functionality.