Redhat AS4에서 yum설치시 에러문제

설치를 하고 #yum을 실행하려 하니 다음과 같은 에러가 나네요.

[root@kikiki yum-2.5.0]# yum
Could not find platform independent libraries <prefix>
Could not find platform dependent libraries <exec_prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
'import site' failed; use -v for traceback
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:
2.2.3 (#1, Aug  8 2003, 08:44:02) 
[GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-13)]

If you cannot solve this problem yourself, please go to 
the yum faq at:
  http://wiki.linux.duke.edu/YumFaq

구글신에게 물어봐도 알수가 없고. --;; 혹시 에러 해결하신분 가르침좀 부탁드립니다. (__));;