No,u dont have to do a uninstall and install.Just run the setup file of the new driver and u r done.
<font color=blue>Just be </font color=blue><font color=red><b>ABU</b></font color=red> - <b><font color=red>A</b></font color=red><font color=blue>lways</font color=blue> <b><font color=red>B</b></font color=red><font color=blue>e</font color=blue> <b><font color=red>U</b></font color=red><font color=blue>seful<b>!</b></font color=blue>