I want to create a form on in a separate window that will then disappear on submit and update the index page??? Any help will be gratefully received
@J. Don't leave out tags and such. This could be web, HTML or something else. Read https://www.daniweb.com/programming/threads/435023/read-this-before-posting-a-question before you reply and then update to fill in the missing details and tags.
That said, show your work so far.