Based on your description, the basic manual approach would be to
1. use a wildcard Find/Replace, where:
Find = (\[[0-9]{2}:[0-9]{2}:[0-9]{2}\])^32([A-Z]{2})^32
Replace = \1^t\2^t
2. Select the whole document and use Insert|Table>Convert Text To Table, to convert the document into a 3-column table
3. Sort the table by the 2nd column.
4. In column 3, select all the rows for a set of initials in column 2, then check the word count stats on the Word status bar.

Does the above do the job? If so a macro can be used to automate the process, but what kind of output do you want - and where?

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]