5406 configuration

[JA03]

I'm new to HP ProCurve switching.  We just bought a multitude of HP 5406's for our high school district.  I have a question about routing and switching. 

Basically, I have a school/branch on our network which has 4 VLANS.  I want the braodcast traffic on VLANs 1,2 and 3 to stay local.  So, I want to ROUTE the traffic on those VLANs back to our Cental DISTRICT NOC which has an HP 8206 at the core.  However, I want VLAN 4 traffic to traverse the "WAN" back to the DISTRICT - extending the broadcast domain to include another side.  So VLAN 4 traffic needs to be Layer 2 - VLANs1,2 and 3 Layer 3.   Can I do that?  Can I mix layer 2 and layer 3 traffic on one 5406/8206?  If so, could someone give me a sample config?  I appreciate any help you can spare.  Thanks in advance!