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Welcome to the forums, gail.
Take a look at my signature below and you will see, as Fast mentions, both Ad-Aware and Spybot-S&D. And also as Fast mentions, many on this forum also use Spywareblaster with success. I also use Ewido as do many others. By the way, it is a good idea to run these "anti-malware" programs at least once a week.
If you are using 2000 or XP, you might also want to check out Ewido.
If you are using W95, 98, or ME you might want to check out a-squared.
Please come back often, learn more, and maybe help others.
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