To get what the message says, try pressing down the Pause/break key on the keyboard. If it is the computer system that is creating the message, this should stop things from continuing. Keep pressing down on the key and write down what the message says, then release the key.
However, if it is the Ad-Aware program creating the message, I'm not sure this will work but it is worth a try anyway.
Question: are you running the Ad-Aware program with IE up and running or shut down? If the former, try running it with IE Shut down. If this doesn't work, try running it in Safe Mode. This is done by hitting on the F8 key several times when you see the black screen before the company logos and stuff come up.