I ran the Clamwin Antivirus on our computer and received the message: C:\Documents and Settings\All Users\.clamwin\quarantine\Texas Hold Em.exe.infected: Trojan.Banker-3942 FOUND. Is This real or False.
I ran Malwarebyltes and AVG and it didnt come up. HELP

The best way to tell if a detection is a false positive is to scan it on Jotti or Virus Total. These two services will scan your file for free with multiple AV programs, including Clam AV , which furnishes the scan engine and signature database to ClamWin. If several AVs (other than Clam AV) spot a detection, it is probably an infected file and not a false positive. Also look at the date that the scanning service first saw the file. If it is older than a couple of days, there should be some AVs spotting it. If it is older than a couple of weeks, the majority of AVs should detect it. Also look at the type of file. Most AVs do better at spotting Windows PE file malware than other types of malware, such as PDF, html, flash, javascript, java, php, etc. and you may not see many AVs detecting this stuff, so treat it as infected if only one or two AVs detect it.

Submit files detected as false positive to Clam AV via the Submit A File page on their web site so they can correct it. Give them a week or less to be sure.

Regards,

Basically I don't like to use antivirus. Because I don't know how they spot virus, when I ran AVG there was no virus but when ran KasperSky it spot some trojan file and blocked some software. So I am getting confused Which could be the best.

AVs detect infected files if the files have a virus signature found in the file. There are many different types of signatures, and AVs can also "guess" if a file is infected, depending upon its characteristics. A virus detection is not necessarily a 100% error free detection, however, because any AV can sometimes make a false positive detection or fail to detect a virus. As I mentioned, scan the file in question at Jotti or Virus Total and see what many AVs say about it.

Regards,