[support] CCK multiple user field with same user more than once ?

Hi, I need to have a CCK field with multiple users, and I need each user to be able to be there multiple times, or ideally to have a ponderation. Like: - joe - joe - joe - jane - rob - rob or (even better): - joe x 3 - jane - rob x 2 So far all multiple selections I found only allow 1 instance of each user. Does anyone have an idea how I could do that ? Thanks, Xav