Microsoft announced their beta Antispyware program yesterday. Although I’m not completely excited when a new Microsoft product comes out - they are usually exploited and followed by thousands of patches, PCWorld magazine actually feels this program might compete with the spyware-killing big boys - SpyBot Search and Destroy and Ad-Aware.
Here are the test results for Microsoft’s Windows Antispyware program:

It was able to detect 91 percent of the adware/spyware in our test suite, including 96 percent of processes running in memory, 67 percent of home- or search-page modifications, 100 percent of BHOs and toolbars, 95 percent of Registry additions, and 100 percent of other items such as menus and buttons added to programs. The utility scanned our 2.7GB of data in less than 3 minutes.

The program looks really good as far as those tests go. But in another article, which digs a little deeper into the Beta program, reveals that it still has some major features to add.
This article mentions that despite the innovative technology behind Microsoft’s new product, support for Firefox, Opera, Netscape and other browsers is nonexistant. Not only that, but using the “restore settings” feature of the Browser Hijack Restore tool returns all the annoying Microsoft advertisements - links to MSN.com, MSN Search, and the MSN Search Toolbar - into Internet Explorer again. The Track Erase tool erases your history and tracks on several programs, including ICQ, Realplayer, Adobe Acrobat, and Internet Explorer, but lacks support for Firefox browsers, AOL AIM chat software, or AOL client software.

Download the program at Microsoft’s website.