Go online and you will find some anti spam software for free. Because spam is dramatically increasing everyone that designs these programs is offering anti spam software for free. Many of the free offers allow you to test the program for a month or so, and then you must purchase the program. You can find anti spam software for free however in which you will not have to pay for the product. Check out Microsoft’s web site for free anti spam programs. Defender is one of these programs. Keep in mind however that if you have Vista Windows, then likely you already have Defender installed. You can check to see if Defender is available on your system by going to the Control Panel. Simply click on your Start tab, find the Control Panel, and click. Once you open up the Control Panel, look through the different programs to see if Defender is installed. If not, then you can visit Microsoft to download anti spam software for free. Other sites online may offer you anti spam software for free. Surf the Internet but be sure to check reviews on anti spam programs that you have never heard of.