Hey guys,
I installed Ubuntu 12.04 64 bit on my laptop yesterday and bear in mind I am a COMPLETE newbie when it comes to Ubuntu or even computing in general so please keep that in mind when your posting solutions .

Okay so we use a static IP, and after installing Ubuntu I tried to set the static IP using the network manager but the save option was greyed out. After googling for about an hour I managed to change the <inactive></inactive> bit of the following file freedesktop.org.NetworkManager.policy from no to yes. I changed all of them logged out and logged on again but, lo and behold, no change. After banging my head on the wall for about 5 minutes I tried again. This time, after another hour, I changed the /etc/Network/interfaces file to
auto lo etho
iface lo net loopback
iface lo net static
address 192.168.1.155
netmask 255.255.255.0
gateway 192.168.1.1

and after restarting using this

sudo /etc/init.d/networking restart

and logging out and in again, I managed to connect to the Internet

However, when I turned on my PC this morning, the Internet doesn't seem to be working. Help please