WD smartware installer

i have lost my WD smartware installer from my passport essential so can u plz let me know where can i find the factory setting stuff like user manual,setups etc . . . .

Hello!  You can get instruction manuals and updated versions of any software that was included with your drive from http://support.wdc.com/

For documentation, you’ll click on the Installation section.  For your drive specifically, you can visit:

http://support.wdc.com/product/install.asp?groupid=209&lang=en

For software updates and downloads, you’ll click on the Downloads section.  For your drive, you can visit:

http://support.wdc.com/product/download.asp?groupid=209&lang=en

I bought 2 of WD my passport elite 500, one got installed on the xp system with no problems, the second one im trying to intall it on my vista and doesnt recognized it,  I downloaded the software many times drivers etc and still doesnt work,  i think is the USB connection on WD passport that doesnt work,  please help!