Hi Antonio!

>I have a form where I use create cursor to create a temporary table. This temporary table is indexed with comand INDEX ON ... ADDITIVE
>The problem is: when this form is been used by two or more users at same time I receive a message asking to overwrite the index.
>How to solve this?
>I am using VFP7 and the session is defined as private.

Try to create the cursor with variable name, thus, you can to use the Sys(2015) for this. Eg.:

lsCursor = Sys(2015)
Create Cursor (lsCursor) ...
Index On..

If this don't work, you can to use the "OF" clausule in "Index On" command.
I hope this help you.