1. from the 'Selection' drop down choose 'PowerMail'
2. select the 'Name' of the issue you want to resend
3. select 'Results'
4. click on 'Select Members' to the right of '# Sent:*'
this will make all those sent the PowerMail your selection
5. from the 'Search' drop down choose 'Contacts'
6. set the 'SELECTION MODE:' to 'Remove'
7. set the 'Contact type:' '=' 'open'
8. (1) set the 'Contact Note:' to 'Equals' and (2) type in the 'Name' of the PowerMail issue (3) select 'Find'
No your selection will be all those who received the PowerMail but did not open it
9. from the 'Selection' drop down choose 'PowerMail'
10. select the 'Name' of the issue you want to resend
11. select 'Publish'
12. select 'Send to Members'