[Nagiosplug-help] Can't locate Net/SNMP.pm in @INC

[Leandro Roggerone]

  Hi , dear all , Im using the check_ifstatus and 
check_snmp_procecess.pl plugins, but both give me the same response : 
"null" in the nagios interface, and i get the following from the command 
line:

[lroggerone at mdz-dns2 libexec]$ ./check_snmp_process.pl -H 172.24.3.5 -C 
public -n http
Can't locate Net/SNMP.pm in @INC (@INC contains: 
/usr/lib64/perl5/site_perl/5.8.8/x86_64-linux-thread-multi 
/usr/lib/perl5/site_perl/5.8.8 /usr/lib/perl5/site_perl 
/usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi 
/usr/lib/perl5/vendor_perl/5.8.8 /usr/lib/perl5/vendor_perl 
/usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi /usr/lib/perl5/5.8.8 .) 
at ./check_snmp_process.pl line 21.
BEGIN failed--compilation aborted at ./check_snmp_process.pl line 21.
[lroggerone at mdz-dns2 libexec]$

I have been reading some info about this issue but couldnt fix it. Im 
using centos 5.4 x86-64 and nagios 3.2.0

Bye.