Hi! I need to know how to

1) retrieve data from database to pop up button and from the pop up button appear the name list that i have from my 'user_name' database.

2)And enable user to select the 'user_name' on the check box and the multiplple selections from the check box will appear on the parent window.

Just like the yahoo mail do for the 'insert address' pop up. Please help me on this!

Thank you!

PS: any good websites that could teach me on this would be much appreciated too! Thank you for your time!!