Hi Barry,
Sorry for late reply.
Excel in 7.5 is quite flexible you can delete or insert column very easily just you need to change the ranges in the EVDRE parameters, You want to show only Id's in report then you can simply hide the descriptions from your report using simple excel logic.
OR
you can change the range and delete the column that contains the description of members as suggested by "Roberto".
Regards,
Sushant.