How can i Scan my mail for ..

Simple, use an anti-virus. I would recommend Avast. Its available free of cost for personal home use. Download it from www.download.com. Another good free anti-virus option is AVG.

your mail program should scan them

or set your antivirus program to scan them

go into options in the antivirus program

To scan your mail, just download McAfee antivirus from net.

With the help of this you can scan your mail for viruses.