Hi,
In brief:
service dhcp
no ip dhcp conflict logging
interface fastethernet0/0 (connected to clients needing dhcp)
ip address - gateway-ip for those clients
ip dhcp excluded-address
ip dhcp pool Clients
network
domain-name
default-router - up to8
dns-server - up to 8
netbios-name-server - up to 8
netbios-node-type
lease {days [hours][minutes] | infinite}
NOTE: You might not need all these options, use only what you need.
Use this document for more info:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_configuration_guide_chapter09186a00800ca75c.html
HTH, please do rate all helpful replies,
Mohammed Mahmoud.