This is a totally trivial question that I suspect has a non-trivial (if any) answer.

Is it possible to edit individual cookies on my computer?

The specific thing I would do is delete just one cookie, I don't want the others to go away. There is a website I log onto that requires a user name, and a drop-down box lets me select the appropriate name. I mis-typed the login one time, so now there are two names in the drop down box and I would like just the one to be there.

This is hardly a calamitous problem, but I am curious about how cookies work and if the user has any options with them other than to globally delete them.

tanstaafl.