Basic Usenet Questions

I just have some basic questions about Usenet...

1. Can people over multiple IPs use a single Usenet service? I understand the connection max is in place, but can people still use it over multiple IPs?

2. Are all Usergroups dedicated to a single service, or are they throughout all services. By that I mean, will 1 service have all the exact same usergroups as another service?

3. What is the best place for a usenet service? I am using the free trial at GigaNews and I like it, though I'm wondering if there's a better place as well.

4. How do you post stuff (files and text) to usergroups?

5. How do you create a new usergroup?


Thanks :)

The following providers seem more suited to your needs, especially the first.
http://www.download2day.nl/nl/Pakketten/3/Heavy.html -- Better in my opinion, havent tried it personally though. ~$15...10mbits speed/100days
or
http://www.newshosting.com/index.php?PageName=index.php