Sandisk 16gb Micro SD Card Reader

I purchased the sandisk micro reader and sd card from  In previous messages, most were instructed to download the software and enter the promotion code.  How can I download the software without the promotion code (it wasn’t included in the little plastic bag everything came in)? 

Also, is this the only way to get my computer to recognize it?  When I insert the card reader, it shows as removable disk G, but when I click on the icon to paste files, it says to insert a disk in the drive.  Any assistance is appreciated.