help adsense payment informations

hi everyone :
i have a problem with my informations account adsense and payment informations.
i have already an account with my informations and i use it for 1 year , and now i want to use an second account adscence but i had created a long time since 2010 , 2011 but i never used this second account (not verified pin ....), and i am affraid to if i put my informations . is it dangerous if i used my second account and if you have any tips or ticks to solve this problem ?, thank's you