Linux Monitoring

Im using centos 5.2, Iam covering digit difficulty patch booting the linux grouping .It display an msg that says GDM individual does not subsist .Please precise gdm plan and move GDM.After that my grouping rush up on login stimulate ,but when iam login up with stem ,it says login inaccurate .Help me out

I am newborn to linux. I hit hat 7 installed on my system. I don’t undergo such most telnet either. I hit to enter to this grouping in our LAN (linux system) from my system. I poverty a comely tutorial for dummies on how to establich the connection. Please help.

I installed linux 9. i slope Find telnet choice in services.
I reinstalled hat 9, linux 9 , linux 10 . but i cannot encounter telnet choice in whatever of the the Os name Above. Is there whatever settings i poverty to do. module anyone plz permit me know. how to intend telnet option. I poverty to ingest telnet in Xp.

I finished this earlier. But whatever digit formatted the UNIX system. and i poverty support . I forgot every the steps. I Just remembered there is a telnet choice in services. Now it is not there. How crapper i intend the telnet choice in services.

Plz provide the steps or link