Easy To Use Countdown Scripts
http://www.dynamicdrive.com/dynamicindex6/dhtmlcount.htm - this is an easy to use DHTML countdown script.
Here You Can Get Links To Many Countdowns
You Can Customize these countdowns for your myspace or use them as is. Just place the code anywhere in your profile that you wish for the countdown to be placed.
Here Is a Great Image Based Countdown Script
this one is really complicated but looks really cool