How to import user list from security groups in Active directory Win2k8 R2 server.

How to import user lists from security groups in Active directory Win2k8 R2 server.

Example: I have created group called ABC_XYZ in that group added more than 50 users now have to validate the group members so how do I pull the list of users in any format like<gs class="GINGER_SOFTWARE_mark" ginger_software_uiphraseguid="3b06cdbb-a1f7-4283-b5e7-7009a7a123e5" id="715eb26e-caf8-41e0-bbc8-4f7bb39bfb4a"><gs class="GINGER_SOFTWARE_mark" ginger_software_uiphraseguid="c10b121d-1a59-4e40-bfcf-05738972f119" id="c0696c06-9cab-4538-b7d9-85035afc7be0">.</gs></gs>csv.