Microsoft on Tuesday will take a step toward competing with McAfee and Symantec in the enterprise security market by releasing a beta version of its Forefront Client Security desktop software.The antivirus software has been in limited testing with several hundred Microsoft customers for months now, but as of Tuesday it will be widely available to testers who want an early look at it."This is the first time we\u2019ll be in widespread beta of Forefront Client Security," said Paul Bryan, a director in Microsoft\u2019s security and access product group.The software is now expected to ship by the end of June 2007, Bryan said. This target is six months later than the one Microsoft gave when it unveiled its client security road map a year ago.The Client Security software has been under development for several years. It combines products that Microsoft acquired in two acquisitions: the purchase of antivirus vendor GeCAD in June 2003 and the December 2004 acquisition of Giant Company Software, which developed antispyware software. Microsoft is not yet saying what it will charge for Client Security, but judging from its track record with consumer security software, pricing may be lower than\u00a0that of\u00a0competitive products from Symantec and McAfee.If it turns out to be a bargain, the cost may attract some customers, but Client Security will also appeal to companies that want to work with a single vendor for their software products, said Daniel Blum, senior vice president and research director with Burton Group. As for the product\u2019s capabilities, however, "there aren\u2019t any features of Client Security that the other vendors don\u2019t have," he said.Microsoft expects two of its Forefront server products to emerge from beta in December, Bryan said. Forefront Security for Exchange Server will cost US$12.60 per user per year when licensed for 250 users. Forefront Security for SharePoint will cost $5.88 per user per year, he said.Based on the Antigen software Microsoft picked up in its June 2005 acquisition of Sybari Software, these products can be used to plug a number of different antivirus scanning engines into Microsoft\u2019s server products in order to root out malicious or unwanted documents.Also slated for release Tuesday are two "application optimizers" for its Intelligent Application Gateway remote access product: a SharePoint Portal Optimizer and a Microsoft Dynamics CRM Optimizer.-Robert McMillan, IDG News Service (San Francisco Bureau)This article is posted on our Microsoft Informer page.\u00a0For more news on the Redmond, Wash.-based powerhouse, keep checking in.Check out our CIO News Alerts and Tech Informer pages for more updated news coverage.