If you discover counterfeit, pirated or any software improperly purchased on your PC that may cause you to be out of license compliancy. Microsoft’s portfolio of legalization solutions can resolve your license compliance issues, so you can enjoy the genuine licensed experience you expect. Click here to view details.

See if your Windows XP-based PC can run Windows Vista. Download the Windows Vista Upgrade Advisor.

Find out how to troubleshoot common (and not-so-common) problems using Windows XP.

Follow these quick guidelines to maintain your computer and keep it running smoothly.

The newest version of Windows is now available! Choose the edition designed for the way you use your PC, from home to business.

See how Windows SteadyState can help keep shared PCs in schools, Internet cafés, and libraries running smoothly.

Download the latest release of Windows Media Player.

Upgrade your browser with confidence. Get tabbed browsing, better printing, easier searches, and improved security.

From security to digital photography, from games to networking, learn how to use the features and technology that come with Windows XP.

Find troubleshooting tips, guided help, and downloads for Windows XP.

Visit the Expert Zone community for tips and advice from friendly experts and to connect with Windows XP users like you.

Get advice, products, tools, and information tailored to your business in the Microsoft Small Business Center.

Windows Vista is available in two editions for business: Windows Vista Business and Windows Vista Enterprise. See which is right for you.

Get how-to articles, troubleshooting advice, and other resources for IT professionals on TechNet.

Download Windows Vista Hardware Assessment today to see if your existing computers are ready for Windows Vista.

Did you know that Microsoft Desktop Deployment Planning Services offers vouchers for up to 15 days of deployment planning? Learn more.

Find technical articles, code samples, and more for Windows XP.

Get the information you need to develop applications for Windows Vista at this MSDN Developer Center.

Visit the Microsoft Partner Portal to get Windows XP sales, marketing and training resources for Partners.