Post installation

How do i create a registration system that does not require member/admin to validate the e-mail address used? For example, the user just directly enter their ID and password in the registration form and directly login with that ID and password. How can i make Drupal to work like that? It is important to me, because my server has mailing problem and it has been 6 months and has not been solved yet. I have to send mail manually to my members confirming their ID and password. And i don't need to validate their e-mail address.

Currently, anonymous users can see the first post, but no replies. I'd like them to not see anything until they register.

OK, this may be harder to understand if I explain it in general terms, so here's what I'm specifically trying to do: I want to be able to create a link in a story that says something like "Visit the [my account] section to update your profile!", and I want [my account] to link straight to the profile edit page at http://www.mysiteURL.org/?q=user/[users's id #]/edit.

So my question is how to create links that use the current user's id #? Obviously static links are really easy, e.g.

Hi.
It's about "theme editor (4.6.x)" module.

I have set it up properly
- Copy the theme_editor.module into the Drupal modules/ directory.
- Copy the theme_editor_engine.engine file into the directory themes/engines/theme_editor.
- Activate the theme editor module from the modules list in administer -> settings -> modules
- Apply the xtemplate.patch correctly

When I go to "administer | theme editor | 'new' tab", it misses the following themes:
- chameleon
- marvin

I want my front page to show the complete body of my blog/story/article/whatever posts, including links to comments, without the teaser anywhere except the RSS feed. How do I accomplish this?

Thanks.

Does anyone know how to change the default font size used by the chatbox module?