Can't see DVD in explorer

I have version OEM version
( got this from nero express help-about)

I didn’t install all of the programs on the installation CD.

Just the basic nero programs.

Do I have to install anything else so explorer will recognize the DVD.

I was able to write a cd, and a dvd-rw.

However I can’t see the dvd-rw on the machine that I wrote it on, and my
other system doesn’t read dvd-rw, so I don’t know for sure what’s on it yet.

It turned out to be ok after I rebooted the system.