I'm trying to add the line

exec rmmod forcedeth 

in the file

/etc/init/module-init-tools.conf 

and then add the line

modprobe forcedeth msi=0 msix=0 

to /etc/rc.local

but when I try the first command it says
not such file or directory, I'm trying to do all this because im trying to enable networking at startup because there is a bug with the drivers for my motherboard
my system specs are:

• board: N68C-GS FX


• processor: AMD FX eight core processor 3.6 Ghz

I'm running Ubuntu 13.04

can please someone help me?