It’s my personal experience of JLR SDD V130 (now v141) running on Windows 7 system on SDD.
For the time being I have given up on SDD DVD 139 V7 because my big laptop needs sorting out.
I have now set up SDD DVD130 V7, which I acquired from http://www.obdii365.com/wholesale/wifi-vxdiag-for-honda-ford-mazda-4-in-1.html, on my Acer Netbook, with a 1.6 Mhz processor,1 Gb RAM and a 255 GB HDD.
(ps: Do not use JLR Mangoose cable, it is not able to transfer IDS from SDD)
It runs Windows 7 Starter(32 bit version), with Internet Explorer 8,Adobe Reader 10,and Java 1.6.26 and Mongoose Driver from China(I could not find my copy of the original Drew Tech driver). I reset the computer date to September, 2012.
It loaded in about 5hrs and works perfectly on my 04 S-Type in IDS mode and my 04 Vanden Plas in SDD mode.
Here, I have attached some screens from my Windows 7 SDD install with my 2004 S-Type and 2004 Vanden Plas.
SDD Opening Screen
System Information Screen
My 2004 s Type
Transfer to IDS
Proceeding To IDS
Vehicle ID in IDS
Identifying my 2004 Vanden Plas
2004 Vanden Plas ID 2