On my Pc , I have a DOS application ,with login form for user name and password. I want to now how to create a new user , and where in the directory of application is stored the file whit password information. Whit other words , when I type my password, in which file the system verify for mutches

Dos doesn't have any native password capabilities. The particular software you're using will have its own method of setting and verifying passwords. So without knowing exactly what software you're using, there's no way for us to know where the password is stored.

You might be able to go to the directory containing the software and, by viewing the file names and dates, make an educated guess on which file contains that info.

The same is true for creating a new user--that's up to the software. Do you have a manual for the software?

There is also no DOS in Windows XP. What are "mutches?"

Life's more painless for the brainless.

I believe that's "matches" but I don't speak geek very well.

Coming home from very lonely places, all of us go a little mad: whether from great personal success, or just an all-night drive, we are the sole survivors of a world no one else has ever seen.
-