problem to set up vpn in my openvz vps.

[root@test ~]# /sbin/iptables --table nat -A POSTROUTING -o venet0 -j MASQUERADE
iptables: Unknown error 4294967295
Solve!

[root@test ~]# modprobe iptable_nat
WARNING: /etc/modprobe.conf line 1: ignoring bad line starting with 'options'
FATAL: Could not load /lib/modules/2.6.32-042stab065.3/modules.dep: No such file or directory

I have root of that dedicated server.
How to solve it?

P/s: CentOS 6 x64+Solusvm+OpenVZ