I have this visual voicemail program installed on my phone and it works the exact same way as the instincts visual voicemail program works, and best of all its free. Instead of me explaining everthing twice follow this link as we have already discussed this at sprintusers.com I personally have this installed on my phone and it works flawlessly, i can 100% gurantee i won't be going back to regular voicemail. The thread is only 4 pages long, page 4 explains everything you have to do, enjoy.
http://www.sprintusers.com/forum/sho...d.php?t=178382