The following CSV template file is working fine with LibreOffice and Microsoft Office if you want to upload multiple users to Google Apps. Just enter the email address, first name, last name and password for each user, then upload the file.

Google Apps Bulk Upload Email Template

If you need further help or can’t find the bulk upload users link please see the Google help page at http://www.google.com/support/a/bin/answer.py?answer=40057 for more information.