Val-
If you go to 2test, you'll have to register, which takes a day, and you'll need a voucher anyway, so call Sun (800 422-8020) and buy a voucher for the written exam (Sun Certified Developer for
Java 2 Platform, Essay Exam (310-027)). It's $150 and they'll give you the number for the
testing centers, then you can find one in your area. They won't grade the assignment until you take the written test so the sooner, the better.
good luck