A custom welcome message(or warning message) can be a quite fun thing to do at home to personalize your computer or if you are an system administrator it can be very useful to let people know information that they need to know.
To make a custom welcome message you need to open the registry editor. There are a number of ways to do this, I find pressing the windows button or opening the start menu and then typing the word “regedit” and pressing enter to be the easiest.
Once in the registry editor you need to navigate to:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
Then there are two keys that are red called legalnoticecaption and legalnoticetext. Legalnoticecaption is the heading and legalnoticetext as it sounds is the text underneath the caption.
Once you have edited these log off and your message will be displayed
This works on windows 7 and also windows 8.
Here is a video demonstrating how to make the logon message do this on windows 7.