Import 1000+ names as "site members" to new page

Ok, thx that is what i wanted to know.

But now some more brainstorming. Peter wrote, that …

The import i have has fields already with email address and password and usernames from the previous web site, all i need to do is import the list into wix
My question in this case would be, how does his import stores the passwort?
As a STRING?
As a encrypted STRING?

So if it is just a normal password-string, so there is absolutely no problem to import 1000-files and register them at once, right?

I already have that little code, which can do this. But well, the problem is, it works with a normal password-string, so that the passwords are visible.

Why do i need that html-snipet? What does it do?