I don't know about CE, but in Crystal Reports, you can set up a report using file system data as the datasource, and one of the fields will be the keywords field. Go to database expert->create new connection->more data sources->file system data and choose the directory where your reports are located. You can then search the field within the CR, using instr() or the "like" operator, as in:
instr({directory.keyword}, "enrollment")
Or,
{directory.keyword} like "*enrollment*"
I think it was vidru that first posted on the ability to report on file system data, although I might be wrong.
-LB