[99SIVTEC]

I run several vbulletin sites and have been wanting the users to be global so they do not have to register on each site. The solution we have come up with is to rewrite the registration system or write a new simple one from scratch. The new one would simply connect to each database and insert the users information at each site instead of the current system that only inserts the data into the one database. All of my sites are on the same dedicated server so this should be a piece of cake. The only difficult part will be the initial setup. What I need help with is a script or even cron job that will check the current sites for duplicate users and such and copy the existing users to each database. Anyone up for that?