Guys,
I am having a weird problem. My Redhat Host name is aztech. My DHCP is running and all my clients(Winxp and Win98) managed to grab the ip. So When I was trying to access my local web server(apache), http://aztech only winxp can access it. I am pretty sure I have edit all the win9x hosts(192.168.1.1 aztech). Only access by http://192.168.1.1 it worked for my win98 clients.When I ping from my win98 to aztech( ping aztech instead of ip),It showed client ip instead gateway. Any idea?

Are you running DNS or Samba on your RedHat machine? You will need a name resolution method for your Windows machines to use in order to resolve the name aztech to an IP. Setting up DNS isn't as hard as it looks, and for a single host it's not to tough...

You will need to install BIND, pick a domain name, and edit a zone file in /var/named for the domain name you picked that will contain the aztech host. Example: "domain.com" /var/named/domain.com.zone:
@ 1D IN SOA domain.com. root.localhost. (
1997022700 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
@ 1D IN NS aztech.domain.com.
@ 1D A 192.168.1.1
aztech 1D A 192.168.1.1
(You also need to adjust /etc/named.conf to point to this new zone file):
zone "domain.com" IN {
type master;
file "domain.com.zone";
allow-update { none; };
};

Once that is working, you can adjust dhcpd.conf to deliver the IP of your Linux machine (which is now running DNS) to your Windows machines, along with a search domain:
{
...
option domain-name "domain.com";
option domain-name-servers 192.168.1.1;
...
}

Good luck!