When I type -
# wget ftp: //rpmfind.net/linux/sourceforge/a/am/amule/aMule-2.0.3-1.i586-SuSE_9.1.rpm
--23:16:45-- ftp: //rpmfind.net/linux/sourceforge/a/am/amule/aMule-2.0.3-1.i586-SuSE_9.1.rpm
=> `aMule-2.0.3-1.i586-SuSE_9.1.rpm'
Resolving rpmfind.net... failed: Host not found.
and when i try to ping -
# ping yahoo.com
ping: unknown host yahoo.com
I lost the ability to download . This happened when i was trying to
set up Bind sever on Fedora Core 2 .
Please advise .
I wonder if i mistakenly made some change in config files or something
somewhere .

# cd /etc
# vi resolv.conf

nameserver dns ip
nameserver secondary dns ip

if you don't your dns ip call your isp for that

welcome on board!
please give more details on your network config!
dns server? router? .....

Thank you Roopunix and Overlord .
It worked ,Roopunix ... I deleted the dns value
accidentally and replaced it with my server IP .
Thank you very much .