Multiple Party accounts on one IP address

****NOTE: This is NOT a post regarding "gnoming"***

I'm home from school for the winter which obviously equals a lot of poker playing. Currently, my brother plays Party Poker, but not regularly. Will it be a problem if I am also playing on my home IP address? Please note, we will NOT be playing at the same time. This is in no way an attempt at collusion. I'm just wondering if it's safe for two accounts to play from the same IP address at DIFFERENT times.

Thanks guys.