I tried to follow the instructions on this page:
and this one:
to edit my quicktags.js file.
I thought I did. I went to my wp-includes folder and found the js folder and edited my quicktags.js file,
But I can't seem to see any difference in the menu of the write post page.
I am using version 2.0.
Is there somewhere else I should be looking for my quicktags.js file?