First, this is NOT a Driver.  It is a "Firmware" update to the drive.  The only "drivers" are the built in default Windows drivers. You failed to include your PC Model Number so I can't look at the firmware upgrade's installation instructions.  But look at the Dell listed installation instructions that are on the Dell Downloads for this drive.  It details exactly what to do.
I'm afraid I'm a bit of a nerd when it comes to computers but I have managed to download drivers in the past with no problems. I have noticed that there is a new driver version for download (TS - L632H slim 8xDVD+/-RW) but I'm having a bit of trouble. After download installs and unzips a TSDNWIN flash window appears. It states that F/W FILE is not opened and when I click in the search box, a window then appears with two boxes, one to enter file name and one with this message; Files of Type DOWNLOAD FILE (*.BIN). I would be very grateful if somebody could provide me with any help in how I open this file in order to install this driver. Many thanks, BobbyZee  
Unable To Download Driver