I relied on rhn to update my server with the latest patch but since RH is moving away from RH9 and lower, what distro should I move to? My server doesnt need any gui stuff like xwindow.. etc... any suggestion?

Currently i'm looking at slackware and suse. My sever will be running apache, qmail, mysqld, samba, and few other things

You can of course load slackware or suse on your system, I am sure that you can feel at home with either soon enough. But just because the default servers for 'up2date' may not be responding much longer does not mean that you can no longer get package updates for your RH9 machine.

One example is the 'yum' project. It is a nice command line update tool that allows you to refer to your choice of several repoisitories. I have been using it on my servers for months now. If you are interested you can take a check it out at:

http://linux.duke.edu/projects/yum/

I'll look into the yum project.

for the redhat, they arent supporting rh9 so it mean no new update.

if I was to compile apache or other programs, would it be similar to th way I would do on rh?

yum is a package manager than runs on RH including RH9. In many ways it is very similar to using up2date. Just because RedHat is not providing updates for RH9 going forward does not mean that it is going to dry up and blow away, there is a very large user base for RH9, hence there will be incentive for projects that want access to these users to ensure that their upgrades are available for the existing RH9 user base.

One group working to ensure that RH9 will remain usable for the foreseeable future is the 'fedora legacy project'

http://www.fedoralegacy.org/

If you want to stay with RH9 it is an option, you will be able to get updates to packages (you will just need to use other tools to get them). But if you are feeling that it is time for a change, that is always an option.

once i got the "end of life" email from rhn about rh9, i knew it was time to find myself a new distro.

i've tried all of the distros you've mentioned (rh, slack, suse) and have found that if gui isn't all that important to you (but is available if you want it), slackware is where you want to be. if you would like a bit more eye candy and all the functionality of rh, i would recommend suse. i can't wait to get my copy of 9.1 pro (arriving monday). until then, you can have my slackware when you pry it from my cold, dead hands.