Synchronize address book

[Agnes]

Title: Synchronize address book

I see there is a shareware utility (Bookit 3.1.1) that will allow synchronization of address books across browsers, I would like to have my Mac Address Book match the one in Entourage, I like the idea of having a spare copy.
Has anyone used this utility, is it compatible with Panther 10.3.3. Does it have any advantage, or vice-versa or should I just forget it.

I see no reference to it in Entourage archives.

I use a PowerPC G4 Mac OSX 10.3.3 and Entourage Version 10.0.0
Agnes C.