he Microsoft Deployment Toolkit 2008 is designed for organizations looking to install Vista SP1 on 50 or more PCs. It's available as a free download from the software maker's Web site.

The toolkit features tools that can automate much of the installation process. It also includes interactive checklists and wizards designed to guide IT administrators through Vista SP1 deployment. It can also help companies simultaneously deploy Vista SP1 and Windows Server 2008.

Microsoft claims use of the toolkit can reduce per-PC Vista SP1 installation costs from $300 to $35.

Microsoft is doing all it can to make it easier for businesses and individuals to upgrade to Vista SP1 in the face of numerous reports of failed installations. Troubles reported by Vista SP1 users range from a simple inability to download the software from Microsoft's Windows Update site to sudden spikes in system memory usage once SP1 is installed.

Microsoft recently began offering free e-mail and online chat support to Vista SP1 users.

The company ordinarily directs Windows users with support issues to the PC makers from whom they purchased their systems. It typically provides direct support only if the user bought a boxed, standalone copy of the operating system.

Microsoft last week made Vista SP1 widely available or the first time. The update is designed to increase Vista's speed, security and reliability.

But the company has admitted SP1 isn't perfect.

The service pack will not install on computers that use device and system drivers that Microsoft has deemed incompatible. The list includes audio and display drivers made by Realtek and Intel, as well as drivers from several other manufacturers.

Microsoft said it's working to resolve the compatibility issues.