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Thanks , you answered the 1st part of my question , Here's the 2nd part
Assuming the forms are embeded in our website, would you allow multiple users to log in with their own password , fill the forms , download or print .
The form embedded in your website will be the online web/HTML fillable form. FormsCentral generates the embed code for you. You can copy/paste this code into your HTML webpage (get the embed code via the Distribute Tab / Embed Form)
End users will be able to fill out the form. The form is blended into your web page, so you will be printing your web page.
More details: http://forums.adobe.com/docs/DOC-1991
When you say "multiple users to log in.." are you referring to logging into the Fillable form? or logging into the actual form to edit the form? Generally, we do not support sign-in/log-in to the form in embed form.
Hope this helps,