Any way to add 100's of users to existing groups

[brick]

The subject says it. i have more users than i want to add by hand to existing groups is there a way to batch that at upload or in the program after uploading.

[Naveed]

Using DataPort you can download the users data in XML format (using Download/Export Customized User Data feature). After downloading the user data in XML, use some XML editing tool like XML Marker (http://xmlmarker.com/) that allow you to edit XML data in tabular format, and populate the user groups data. After making the required changes re-upload/import the data back to your store.