I assume you're asking for information on obtaining a voucher for the 70-240 Accelerated Windows 2000 exam. First, Microsoft recommends that you consult their Q&A about this exam on the MCSE FAQ page. Then, you will have to sign into the secured MCP site for an explanation. You will indeed need your MCP ID to log into this site, but from there you can obtain the free exam voucher for 70-240, providing you meet all necessary qualifications to obtain that exam (namely, having passed 70-067, 70-068, and 70-073).
This was first published in October 2001