I never understood why this is such a common question...
Anyways here you go..
Go to: http://support.dell.com
Click 'Drivers and Downloads'
Select the Product Type: (select 'Inspiron' from the drop down menu)
Select the Product Model: (select '9300' from the drop down menu)
Select your OS and Language from the drop down menus
Click 'Find Downloads'
This gives you a nice, neat and tidy screen divided into subtitles like Applications, Audio Drivers, Display, Network, etc... for your laptop.
Not flaming you so dont take it that way.
Just this is such a common question yet really.. go to the Support site for whatever product you have and you have a 99% percent chance of finding what your looking for.