[root@rhel5HP Server]# rpm -ivh telnet-server-0.17-38.el5.i386.rpm
warning: telnet-server-0.17-38.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 37017186
error: Failed dependencies:
xinetd is needed by telnet-server-0.17-38.el5.i386
[root@rhel5HP Server]#
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[root@rhel5HP yum.repos.d]# yum -y install telnet-server
.....
warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID 37017186

Public key for telnet-server-0.17-38.el5.i386.rpm is not installed

Questions:
I have the RHEL5 cd copied to the harddisk. set up yum configuration file..
#createrepo -v . is also done..

when i am trying to install any thing it is giving this error..why?

dont worry got it solved
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[root@rhel5HP rhn]# rpm --import /rhelrepo/RPM-GPG-KEY-redhat-beta
[root@rhel5HP rhn]# rpm --import /rhelrepo/RPM-GPG-KEY-redhat-former
[root@rhel5HP rhn]# rpm --import /rhelrepo/RPM-GPG-KEY-redhat-release
[root@rhel5HP rhn]# rpm --import /rhelrepo/RPM-GPG-KEY-redhat-auxiliary

by googlling (lol) i read some stuff about importing gpgkey
i did the above commands and all is working as expected.

but now the question is if i have gpgcheck=0 i will not have to do the above? or will i?

[root@rhel5HP yum.repos.d]# cat rhel5HP.repo

[0001]
name=rhel5
baseurl=file:///rhelrepo/
enabled=1
gpgcheck=0

Yes if is there in your repo,then the package u need to install by yum will not be checked by gpg.
But you should enable this feature by