Modify a Magento template safely

Question

I want to modify a .phtml template file in Magento (which is located in app/design/frontend/base/default/template/persistent/customer/form) but I'm afraid to modify it directly since it's a core file.

How can I create a simple module to overwrite this file?

Thanks in advance :)

Answer 1

Goto admin >> Configuration >> Themes

Give a package name and a theme name

Then copy this file to location

app/design/frontend///template/persistent/customer/form.phtml

are you using this to add some fields to form. There you have to add field to collection