http://www.neopets.com/remacct.phtml
You can't if you want to stop playing don't go on the account anymore and your neopets will starve and get illnesses
im not sure what u mean by activate it. do you have a copy that you havent installed? in that case put in the cd/dvd and follow the directions. or are you saying that you have a "questionable" copy...
Email them at support@neopets.com
neopets.com/remacct.phtml ^this doesn't work^