All components function normally after the system is upgraded to any later version of Windows for which the system or component carries the logo. Design for Success with the Windows Logo Program Use the Windows Logo Program Requirements as a Design Guide Confirm that all hardware and software components comply with the Windows Logo Program guidelines to ensure that all components in the system work together to provide the optimal end-user experience under Windows. The WHQL Test Specification defines the precise test assertions that are validated by the HCTs. Study the WHQL Test Specification to understand exactly what portions of industry specifications and DDK driver guidelines are required in the compatibility tests. Use the HCTs to Design for Compatibility Use the HCTs in your product test suites to ensure compatibility as part of your development process.
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Participate in the industry forums, and in committees that develop strategic specifications and interfaces. OEMs should plan to migrate all bundled devices to non-legacy interfaces, such as USB and IEEE 1394. Use the Windows DDK samples to develop your code. Use the Driver Verifier and other DDK Test tools. Your test matrix should include upgrading your shipping PC systems to Windows XP, which will help to identify constraints that might prevent a smooth transition for your customers.