i install small ofice network with windows xp sp2.and network and internet sharing is working.but some time internet sharing not working .and some time net is very slow on clints.some time ip problems.8 computer cenected with internet.i use dailup modem with good speed.and use switch d-link 16 port.and network range is 40m.and ip is automateclly asign by dhcp.some time working if it is not working than i restart computers for dhcp ip,s.plz help me what may i do.and other i want to creat wireless network.it is possible that wire and wireless both net works is working