I'm sure this site uses cookies and not IP addresses.
If you are running a operating system that allows logins by different users, then this will solve the problem, since each user will have their own cookies.
Just logout and then your husband can register/sign-in. When he is done, he or you can log out of his account and then it is your turn again.
The logout link is right next to your name at the bowl entrance.
Everything so far is correct. Logins are tracked with cookies. If your computer is set up for only one user, each will have to log off of the Bowl before the other can log in. Otherwise, with the right OS (such as Win2k or WinXP) set up for multiple users, simply log in to your computer and use the Bowl normally. When your Hubby logs into the PC, a separate cookie should be saved.