[TYPO3] .htaccess and RealURL

[Andreas Koppa]

Hi,

My first Typo3 is up and running although it's still empty.  I have not figured 
out how to import all my HTML pages into Typo3 yet. 

Anyway, my problem now is that I have installed RealURL without testing it 
thoroughly because of the .htaccess.  It works fine on my Windows machine 
but I have not changed my .htaccess on the server because I don't wish to 
mess up my site.  I'm not an Apache/Linux expert and that's why I hesitate 
to go ahead.

I installed typo3 4.0 Beta on the root.  I use index.html to access my HTML 
site and index.php for Typo3.   At this time my .htaccess has the code to 
preclude hot-linking images only, so have no problem to disable it for a 
while.  My question is in what extend might the suggested .htaccess affect 
my site.  The site is medium size (some 20,000 archives of all type) and 
a WordPress blog in its own dir.

Question:  May I upload the suggested .htaccess without compromising my site 
or should I take some precautions?