I logged on with root access, then I type
But i got
then I tried searching rhn.redhat.com for a version of yum package for Linux AS3 with no luck.

You should make good use of google.com/linux You can find a compatible version of yum from here - You may need to complie it from source rather than use rpm to install it, but it is a champ. You could also check your install CDs, I bet yum is on one of them.

__________________
http://hackingart.com/tinh_yeu_va_gi...c_girl_9x.html

[root@vmhost27117-4 yum-3.2.0]# yum install bugtracker
There was a problem importing one of the Python modules required to run yum. The error leading to this problem was:
No module named yum
Please install a package which provides this module, or verify that the module is installed correctly.
It's possible that the above module doesn't match the current version of Python, which is:
2.3.4 (#1, Feb 18 2008, 17:17:04) [GCC 3.4.6 20060404 (Red Hat 3.4.6-9)]
If you cannot solve this problem yourself, please go to the yum faq at: YumFaq - Linux@Duke Project Wiki
I goto ­­­­­­­­­w­iki linux, but i got nothing

oh, i found IT.
I found that my CentOS version is 4.5 (FMS 3 running only on centoS 4.5) - and I have to use up2date command.
Thanks everybody.