[Koha] Koha installation error

[Amrit Pal Pathak]

I am newbie to koha.I followed the steps to install it from
http://www.blazingmoon.org/news/2008/12/installing-koha-3-on-ubuntu-810-a-tutorial/
.After installation when i browsed to "http://127.0.1.1:8080/" ,it
gave me the following error message.

Koha error

The following fatal error has occurred:

Can't locate ZOOM.pm in @INC (@INC contains: /usr/share/koha/lib
/etc/perl /usr/local/lib/perl/5.10.1 /usr/local/share/perl/5.10.1
/usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10
/usr/share/perl/5.10 /usr/local/lib/site_perl .) at
/usr/share/koha/lib/C4/Context.pm line 90.
BEGIN failed--compilation aborted at /usr/share/koha/lib/C4/Context.pm line 90.
Compilation failed in require at
/usr/share/koha/intranet/cgi-bin/mainpage.pl line 24.
BEGIN failed--compilation aborted at
/usr/share/koha/intranet/cgi-bin/mainpage.pl line 24.


Please somebody help to fix it.

-- 
Thanks
Regards
Amrit Pal
amritpalpathak.blogspot.com