[NTG-context] texsync - help

I just discover the existance of texsync by browsing the manuals. I tried to update the manuals and it worked fine in a $HOME/tmp directory. I am kind of skeptical in updating the whole context installation because I don't know the proper destination option. I installed tex using texlive2004, and it created a directory /usr/local/texlive2004/ in my Fedora3 linux. I wonder if the following command would do the job wihout harm: texsync --full --update --force --destination=/usr/local/texlive2004 and what else should I do afterward. thank you Ciro