want to create a subscription form for e-newsletter.

e-newsletter is awesome, but it does not provide info on any of the form data required to create a form-based sign-up.
I would like both members and non-members to have the ability to subscribe. This plug-in does offer a double opt-in for non-site members, but I don't see any form examples or form settings to use on my site to make this functional.

I think Aweber is promoted (and designed) by Satan, so please help me make e-newsletter work as an alternative to this crappola!

I want to add a simple form to my sidebar multisite-wide, to invite newsletter subscribers. Any suggestions on where to find the form data I need to make this work?