Quick Research: I did a Google search on "C:\WINDOWS\BBSTORE\DSS\DSSAGENT.EXE"
and located a good description from http://archive.salon.com/tech/col/garf/2000/06/15/brodcast/:
... The program itself had been hidden deep within my Windows
directory, apparently designed to look like a system file. Further
investigation revealed that the DSSAgent had been written by
Broderbund and had been installed when my daughter loaded an
Arthur's Reading Race CD-ROM onto my laptop the previous weekend.
There were thunderstorms over my destination, so while my jet ran
racetracks in the sky, I fired up some tools and started pulling
apart the DSSAgent program. I discovered that the DSSAgent
contained a copy of the developer's kit for the Pretty Good Privacy
encryption system, that it contained the ability to send e-mail and
post forms to Web pages and that its creators had gone to great
lengths to hide the software's function. And there was no copyright
message indicating who had written the program...
What I Did:
1. Looked at C:\WINDOWS\BBSTORE, found the directory, and deleted it: