I assume you are trying to register for a
test at
www.2test.com - the website for Sylvan Prometric testing.
Before you can schedule the exam at this site, you need to purchase an exam voucher for exam.
You can do this by calling Sun eductional services at 800 422 8020 fromthe US. Check this link for more details
http://suned.sun.com/US/certification/register/index.html HTH