When you search for domain it should show "available" then only you can register. if it show "backorder" it means not available, If the original register will not renew it, it may be get it registered, if we are the senior in backorder booking. Book at your own risk..
Your domain name registration will be processed once the domain application form has been completed. The registration process takes only minutes. An e-mail will be sent confirming domain registration once processed.