Multiple dhcp's

Hallo

My linux server is connected directly to the provider (telenet in
Belgium). For the moment I'm using one public ip-address (dhcp is
mandatory) and I'm happily NAT'ting away with iptables and it works
fine. But my provider gives me multiple ip-addresses all with dhcp.
I
would like to use that (so I can redirect one to a playstation, easier
that redirecting ports). The problem I have is that extra addresses
assigned to the same physical card are all fixed (I'm using opensuse
10.2). Is there a way to let more than one dhcp being lanced on the
same 'physical' card and that each dhcp gives its address and subnet
to
the appropriate 'virtual' card ?
If opensuse 10.3 (or another distribution in extreme) is supporting
this
I willing to upgrade, otherwise I do not want to fix something that
works (call it experience).

Thanks