Hey, I recently went to install Hellgate : London but my CD drive won't read the disk, saying there is an empty disk in the drive, asking me if I want to format it. Please help, this problem is very annoying :(

You should try this, even if you do not have this particular error, it often fixes problems such as you are experiencing, doing this will not harm or change anything you have installed on your system, it involves removing 2 registry keys.
Here is the link
Cannot Access CD-ROM and "Code 31" Error Message in Device Manager After You Remove Adaptec Easy CD Creator from Your Computer (http://support.microsoft.com/kb/270008)

nwa dude, it doesn't even come up with an error message at all! =[