Setting up VLans and IP interfaces

[tonyvena]

OK this is probably a stupid question but I am fairly new at setting up these switches so I am going to ask anyways.  Here's the situation.  I have a 5500G that is my core switch.  I will have twelve 2952's and 2928's in my network ( I am replacing some old Dell switches).  I will have six VLAN's.  My question is what do I set as the VLAN interface on each of the switches?  For instances.  If switch A has the IP interface for VLAN 20 set at 172.16.20.1, would all the switches share that IP for VLAN 1 or would each switch have a unique IP for each VLAN interface? 

Thanks in advance for your help with this.

Tony