Cisco Multiple public IP to vlans

Hi there.

I’ll start here first with saying that I am not very o-fay with Cisco IOS, and am after a bit of help.

I have a Cisco 1760 router w/WIC-1ADSL card, running IOS version 1700-entservicesk9-mz.124-15.T3.bin, and a 3524-XL-EN switch.
I have four VLANs on the Switch, VLAN 2, 3, 4 and 5.

I will be assigned some public IP addresses by my ISP, and need to map a public IP to each VLAN. One of the VLANS needs to be in a DMZ if it makes a difference?(This is a single gateway PC) I need to makes sure that when clients from each VLAN access the outside world, it uses the public IP assigned to that VLAN.

How do I do it? If someone could post an example, that would be great.

I would be very appreciative of anyones help.
Thanks