How To Restart Gnome From Terminal

$sudo /etc/init.d/gdm restart

How do you remove entries from the "opens with" menu?

1.Open Nautilus -> Select the file -> File -> Preferences -> Open With -> Select -> Remove."

Or,

1.Where you want to go is into your home folder and use ctrl+h or view -> show hidden files.
2.Then open .local -> share -> applications

In the applications folder should be a file named mimeapps.list (it doesn't exist by default but is created from using, among other things, the r.click in certain ways. If it's not there don't worry.

Read this: http://ubuntuforums.org/showthread.php?t=1034632

How To Access Apache Web Server From LAN

http://ubuntuforums.org/showthread.php?t=244437

How To Fix X

the new version of Xorg doesn't reconfigure the graphics driver that way anymore. Instead, get into the VESA driver to get a working desktop (although it will be slow) by doing this from the recovery console:
Code:

xfix

Then from there, go to System->Administration->Hardware Drivers. It will let you know what proprietary drivers are available. Activate, and restart. See if that helps.

How To Repair Network Connection

Code:
sudo dhclient

This is exactly the same functionlity as the window "repair" button, which just does 'ipconfig /release" and "ipconfig /renew".

How To SSH

1.you need to install openssh-server
2.you need to forward port 22 from your router to your "server"

How To Partition Your Drive Using Ubuntu Live CD

Boot into the live CD

hit Alt F2 and type gksudo gparted