First, please go here and read the guidelines to use the forum. http://www.fedoraforum.org/?view=guide
Then, go here and read the information there. http://forums.fedoraforum.org/forumdisplay.php?f=61
Lastly, it is NOT recommended that a root privileged account be used for daily operations. Doing so defeats many of the security features built into fedora Linux. It also, therefore, places your fellow Linux users at risk as well.
I do not advise it.
Thanks Dan, really appreciate your help and advice. actually i'm just practicing. anyway can u teach me how add some rights for the ordinary login name..again thanks Dan.