Hi srinivas !!!
Prior to all, you have to register on
Certification Database.
After that, you will confirm your mailing adress and wait until SUN
mail you the certificate.
For the logo, if you are registred on Certification database, you
can make the request to have the logo using the apposite
form. Sun will sent you an e-mail with the link and the password you need to download the logo. You don't need any thing else to have the logo. You just need a "Candidate ID". You will get this once registered on SUN database.
Hope it help !!!