Trend Micro HijackThis is a free utility that generates an in depth report of registry and file settings from your computer.
1. To analyze your computer, start HijackThis and run a scan.
2. Save the HijackThis logfile to your PC.
3. Upload your logfile to http://www.hijackthis.de/en. Choose your language.
4. A logfile is not so easy to analyze. Even for an advanced computer user. With the help of this automatic analyzer you are able to get some additional support.
IMPORTANT: HijackThis makes no separation between safe and unsafe settings. It opens you a possibility to find nasty entries easier (e.g. registry key made by ZeuS 2.x).
These websites host a collection of lists that provide information on the components of legitimate and potentially unwanted programs.