Events' Website- How to do it?

I believe that this can be done with the Organic Groups family of modules.
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http://classicvinyl.biz
http://music.classicvinyl.biz
http://association.drupal.org/user/1207

If you're using 6, it looks like there's an RSVP module for Organic Groups: http://drupal.org/project/og_rsvp

The organic groups calendar http://drupal.org/project/og_calendar lets you do multiple event calendars, or if you only want to have one event calendar, you could try the normal calendar module - http://drupal.org/project/calendar. But then you might have to custom rsvp thing, probably could do it using the voting API if all you care about is who's going? Not sure.

Have you looked into CCK as well? You could use that to create an event form that allows users with sufficient permission to post events. For the registrations, if you'll excuse a bit of blatant self-promotion, you might be able to use Autocreate Node Reference to make a reference to a registration form (which you'd create using Webform) where other users can sign up for the event.

salud,
Bill

Or use the RSVP module.

I believe he wants other users ALREADY REGISTERED to say if they'll attend
and not other users, outside the website

I'm trying to do something similar right now...

Actually I want to be able to have a listing of users who choose to attend an event (much like the facebook event application)
I could that using the poll module (core) I suppose, but I'm looking for some more advanced solution

for now (this "problem" just emerged) I was just using core modules, events were simple nodes (stories)
seems I have to go for something more event-like

I would be glad for any advice also :)

If you just want a simple yes/no headcount, try Signup.

CiviEvents is great, but only if you're doing something elaborate, like a multi-day workshop with paid registration.

@firstlut

I installed signup last night and I really liked it
after endless searching and trying (civicrm, events, og) the most simple solution for me was signup :D
if only I had seen your post earlier, I would have 3 hours more sleep :D

@c-c-m
of course I also recommend giving signup a try and if you make any progress i'd love to learn about it

at the moment all I've done is:
install signup, create a new content-type (called "trips") and enabled signup for that particular type
I made the new content-type in order to be able to filter it later, a simple story would do the job!
now all users (even non registered ones if i choose to) can signup for the event and I have the ability to mass-contact them (ex: the trip is canceled)

next step is to create a calendar displaying them! I havent used the "events" module because it is still in DEV :(