Solaris 8 is later than Solaris 7. It is your own preference to choose the version.
-linmeimei(林妹妹);
2001-8-27{187}(#180721@0)
Call Sun to buy a voucher. You just need the voucher number to register for an exam. They will mail you voucher later. No discount on voucher as far as what I know. Good luck in the exam!