i know what you mean, your bro may upset you.
here i have some suggestions and i am not very sure the effect course i have no this kind of experience, but you can try.
1.Use a spyware removal tool. Free tools such as Spybot Search and Destroy, Ad-Aware or Malwarebyte Anti-Malware are a good way to get started. Simply download the program and install it on your machine. For Spybot, for example, you click on "Check for Problems" and it will take about 30 minutes to scan your machine. After it is finished, it will return a list of possible threats and ask you if you wish to remove them. Click "Yes" and they will be deleted.
2.Use an anti-virus program. Some of the ones that you can consider are Avast, AVG and Norton Anti-Virus. As of 2010, these programs range in price from free to $49.95. Once installed, make sure that you have the latest updates in the virus database. A scan will typically take about 45 minutes to 1 hour to perform and should be done about once a week. If it finds anything, it will ask you if you wish to remove the threat. Click "Yes" and the program will be deleted.
3.Remove the threat manually. If using a spyware removal tool and anti-virus program doesn't work, remove the threat manually. However this should not be done unless you are an expert with computers as you can damage the registry and permanently disable the operating system. You will need to delete all the files, directories, registry entries and other objects that have become infected with the keylogger.