Greasemonkey Scripts

Hey, I was wondering how to put a Greasemonkey Script that I have onto a website so people with the Greasemonkey add-on would be able to install it with ease. I have looked at www.userscripts.org however it did not meet my needs as I could not choose who would be able to download it, and I did not know (if possible) how to remove the script from the website. What I would like is to know how to host the Greasemonkey Script on a website so when a person goes to the URL, it will allow the individual to install said script. I would also like to know how to password protect the page and make logins to the page, so only people I authorize can go to the URL and install the script. Also I would like to know, but not necessary is if it's possible to make a login automatically expire after a certain amount of logins.

Summarized:

1. How to host a Greasemonkey Script on a website
2. How to password protect the page to prevent unauthorized access
3. How to make logins for the password protection page
4. How to make logins automatically expire after a set amount of logins