What kind of software can I get to protect myself?

Before downloading another file or opening another e-mail, you need to purchase some sort of Anti-Virus software.  It really doesn't matter which package you choose.  All will do the job nicely.  The only difference is the way it looks on the screen.  Functionally, they will all stop viruses dead in their tracks.  Our advice is to immediately purchase Anti-Virus protection.

I already have Anti-Virus software, so I'm protected, right?

NO. Unless your Anti-Virus software is configured to automatically update its virus "fingerprint" signatures, it is essentially useless.  You must either tell the software to update regularly or you must download updates and install them yourself.  For information on updating, click here. 
 

Purchase NAI/McAfee ViruSCAN Products
 

Purchase Symantec/Norton Anti-Virus Products
 

Purchase Trend Micro Anti-Virus Products