[TYPO3] RealURL for dummies

[Alex Hobbs]

Hi all,

I can't get my head around RealURL. I have a very simple 3 page website that
I'd like to use real urls eg http://www.domain.com/home.html,
http://www.domain.com/aboutus.html, http://www.domain.com/contact.html

Can someone explain step by step what I need to do to get this to work?
Particularly the configuration side.

Also, does affecting the .htaccess or httpd.conf effect other existing sites
on Typo3 that don't use realurl?

Thanks, Alex.