Trend Micro HijackThis is a free utility that generates an in depth report of registry and file settings from your computer. This tool can help you detect spyware and viruses. Do not use this tool alone. Use this tool along with other spyware and virus removal tools.
Download it here:Trend Micro Hijackthis tool
So now you have generated a log file using Trend Micro HijackThis. Here is a website that you can upload the log file on to Analyze it.
It gives you a nice output that is easy to ready and recommendations if files are safe or not.
If you are not an export or do not know what you are doing.Please seek a computer professional.