Many people use Windows Live Messenger today. Chatting, and keeping track of the mail is useful, but lately there has been added new changes to it, including advertisments and limitations. There is however possible to remove/change this with an simple Patch.
There is a applications called A-Patch that allows you to modify, remove and change certain things about Windows Live Messenger. It's small of size, and very easy to use with good instructions.
Download A-Patch
Open the application, and follow the instructions. Choose whatever you want to change, and patch. The program has a restore-function if you want to undo any changes.
Here is a step-by-step video showing this: