Set up Ad-aware like this - before scanning click on "check for updates now" to make sure you have the latest reference file. Then click the gear wheel at the top and check these options:
General> activate these: "Automatically save log-file" and "Automatically quarantine objects prior to removal"
Scanning > activate these: "Scan within archives", "Scan active processes", "Scan registry", "Deep scan registry", "Scan my IE Favorites for banned sites" and "Scan my Hosts file"
Tweaks > Scanning Engine> activate this: "Unload recognized processes during scanning."
Tweaks > Cleaning Engine: activate these: "Automatically try to unregister objects prior to deletion" and "Let Windows remove files in use after reboot."
Click "Proceed" to save your settings, then click "Start", make sure "Activate in-depth scan" is ticked green then scan your system. When the scan is finished, the screen will tell you if anything has been found, click "Next". The bad files will be listed, right click the pane and click "Select all objects" - this will put a check mark in the box at the side, click "Next" again and click "OK" at the prompt "# objects will be removed. Continue?".
Reboot when done.
Excellent instructions!