Lexia cables & Diagbox

Just found the Lexia & Diagox I bought last year - phew!

I have been watching countless tube vids on installing the software, plus some typed instructions online. But they all vary one way or tother, and are for different releases of the software.

So pls could someone point me to a reliable installation guide, specific (if necessary) to:

• Lexia 3 A.1281z Diagbox V7.83 PP2000 Rev C Full Chip
  
• on a laptop with a fresh install of Win XP Pro SP3 (i.e. no VMs needed)
  
• it only has a 70 gig drive and 1.5 gig of RAM - enough? It won't be used for anything else.
  

Just a link would be fine - no need for a lot of typing (I hope).


I can't find notes on Lexia's cabling anywhere online. Most of it is obvious - most cables join together and create a chain with a USB plug on one end and an OBD plug on tother with Lexia in between, but...

• There are two VGA-USB cables - a mistake by the seller or do I need both? What for?
  
• What is the cable with a female OBD socket leading to two car batt grips and a two-spade connector for???
  
• What is the small 3-pin socket for in the end of the Lexia unit?
  

TIA