Hi!tell me if softwares mostly include viruses?and tell me which is the best antivirus if iam using

Not all software includes viruses. You need to scan it for viruses to check, because you can never be sure.

A good antivirus is AVG internet security, but if you want something free, try Zone Alarm.

Hi!tell me if softwares mostly include viruses?and tell me which is the best antivirus if iam using internet?antivirus

If you find software in suspicious places it probably includes viruses. Software that you buy or find via computer magazines is almost never infected.

One way to judge is to look for websites that offers it´s own software. I mean that f. i. Adobe is OK to pick up Adobe Reader from.

The best antivirus differs from time to time but you definitely shall have one - and a firewall too.

There are free alternatives like Avast and AVG that usually is well looked upon.

Zone alarm is a free firewall.

Illegal copies of software is most likely to be infected. If you stick to legal stuff you are much more safe.