TexLive2008 package manager problem

Hi,
I have installed TexLive2008 completely and it works without problem. But I can’t access “tlmgr” in order to update packages. I have a “@tlmgr” in the following address: /usr/local/texlive/2008/bin/x86_64-linux
After running:
amir-pc:/usr/local/texlive/2008/bin/x86_64-linux # perl tlmgr
Error message:
Can’t locate TeXLive/TLPOBJ.pm in @INC (@INC contains: /usr/lib/texmf/tlpkg /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi /usr/lib/perl5/5.10.0 /usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi /usr/lib/perl5/site_perl/5.10.0 /usr/lib/perl5/vendor_perl/5.10.0/x86_64-linux-thread-multi /usr/lib/perl5/vendor_perl/5.10.0 /usr/lib/perl5/vendor_perl .) at tlmgr line 33.
BEGIN failed–compilation aborted at tlmgr line 33.

Help me please.
Thank you very much.

I have the same problem. In my situation I dont have even tlmgr installed using repo packages. :frowning: