This problem already disccused here : How Do I Validate My Account?
but the link given by ''Vinnieza'' is no longer valid (didnot work) again so I decide to make new thread.
For account validation you can go go this link :
Click the ''resend validation button''
If you typed in the wrong email address when you registered you change it with click the ''edit'' button.
Note : Check your junk mail if it's not in your inbox. You can resend it by looking at the top of this page. There is a "resend validation email" link.