Managing Groups

[DROBB]

We have a group of over a thousand names, those names can change weekly as new members are added and old are removed. They are our insurance agents we send surveys to. ( We are an insurance company)As we pull that group in to send a survey, what is the best way to make sure it's up to date? How can we manage it easily? Manually remove those no longer with us and manually add the new agents each week?
Is there a way to automate it? I have the list that gets updated nightly from our mainframe to an Access DB. It might also be in SQL. Can I somehow link to that DB? That group MUST remain accuate. We can't send surveys to agents who have left the company.

[pwiesner]

There is no built in way to automate the management of group members. In a stock installation you will need to manually add/remove users.

If you own the developer kit you would be able to write an application to automate this task using the user management web service.