trouble shooting Fedora Core 3 installation

[Stephen King <stking amigo net>]

I've just installed FC3 on my hard drive
It is incredibly slow and the graphics dont display correctly or refresh 
very well; some times not at all.
The only way I can see certain windows is to pass the mouse over the 
window to display the contents.
Some program options form the menu don't display at all particularly 
those related to system or preferences
Any help would be most appreciated
Steve