I have tried all the possibilities in www.ltsp.org and all other site you have mentioned.
www.k12ltsp.org Use this. Wonderful package- automates most of the tasks that you have to otherwise manually do with LTSP. Ideal for people new to Linux. I used this to get 25 diskless nodes up in my college. Download the ISOs, burn CDs and u are ready to go.
In case you need to burn EEPROMS, go to Lamnigton Road. There is a shop named 'Niki Semiconductors' who burns EEPROMS for Rs 20/-. Tel: 23884628, 23887176
Address: Shop no 1-A, Groung Floor Pushpat Nivas, 3, Chunam Lane, Lamington Road. Mumbai -97
Cheers, Ashok