sidebar.php – normally IS the right sidebar, by default. Just open it in a plain text editor, edit it and after that upload it to your site.
Do NOT use the online theme editor: it doesn’t have an UNDO button!
I checked that and no file is found with that name BUT I also emailed the programmer and hopefully he can help. Are those kinds of questions for this forum? I want to make sure I am asking the right people!!! Thank you for your time….Tara
you didnt look in the right place for the file. Its inside the theme directory, along with the rest of your theme files. Proof of it’s existence is right here:
http://marketingartfully.com/wp-content/themes/neoclassical/sidebar.php