What your brother has Manny is spyware. Follow these steps please:
First run Ad-aware6.0 (click here) and UPDATE accordingly with the [check for updates now] button and afterwards delete everything it finds.
Download, install and UPDATE Spybot (click here) . Scan and fix all items marked in RED.
Perform an online virus scan at Trend Micro's Housecall . Remove every virus
found.
Then run Hijackthis (click here) and before scanning close all (browser) windows. After scanning save the log (notepad will open up) and copy, paste the log in here again.