how to automatically change the customer_group_id?

Hi,

How to automatically change the CUSTOMER_GROUP_ID when the CUSTOMER subscribe to the newsletter?

example: if CUSTOMER_GROUP_ID = 1 and CUSTOMER_NEWSLETTER = 1, then CUSTOMER_GROUP_ID = 2 automatically and then sending specific email at customer.

Sorry for my bad english, i'm french.

Thank's

I looked around for an extension that would give this to you but could not find one. I found many that were "similar" but not exactly what you need. I perhaps can help you with this if you skype me at Involution Media.