Not sure why you want to mess around with DHCP since your router can
handle that stuff along with static IP's for those systems which you
want to remain constant (usually servers, network stuff, etc).

You can provide wins services via SAMBA along with print services. Or
you can use one of your windoze boxes as a print server for everybody
else including the *ux systems.

Not sure about the Radeon card but you will need to modify the
/etc/X11/xorg.conf file so that the system can talk to it.