[Typo3] Moving Typo3 Directory

[celita5 at aol.com]

Hi everyone,

I have a question regarding my Typo3 directory for my website.  For a 
couple weeks I have been working on my typo3 installation online on a 
subdirectory to my root... for example www.mysite.com/typo_site.  
However, now I am ready to use this same installation on my root 
directory... therefore now I want to access my Typo3 site like this: 
www.mysite.com.

How can I successfully move the files of my Typo3 installation up back 
to the root/parent directory with ease?  Is there anything I should 
watch out for?  Is there maybe some easy way to do this?

Thank You!