Only tested & working in real machines with 1GB+ RAM.
The 90MB download is here.
Please use this ISO as source (Windows7 x86 sp0 english) & and a proper download manager when downloading.
If any building problems, try read this small guide first.
If any other problems/requests, send a message here.
If you like this project & find it useful it’s possible to donate a beer or two here: 
Good Luck!
Ps
From the authors of NVDA:
"it enables blind or vision impaired people to access computers running Windows"