98 can not connect to the internet

I have cisco 805 router installed and win2000 is my server. All the winxp
machines can connect to the internet and they can see the network shares as
well. But win98 machine can not access internet but can see network shares.
I've enable DHCP for clients and given the correct domain name. In addition
I can not see 98 machine in Active directory. Please help me to solve this
problem


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