I flashed it and it work well in both XP and Windows 7 :D.
I am from Myanmar. Some of hobbyists in my region use this programmer and I will also share this info to them.
One of local supplier sold this beautifully made sandwich style programmer.
As your guide, simply remove PIC and flash booloader first. Then replace crystal with 8MHz. Finally, reconnect programmer and updated firmware (I updated ver 0.5.0). Then connect RB6 (Pin27) to ground.
BTW, I noticed that LEDs are connected at PIC pins 11,12 and 13 in USBPICProg and pins 27,28 at GTP-USB-Lite. So, I simply cut the trace from RB7,RB6 (pin27,28) and connected to Pin 11,12. LED shows signal now.
Mostly, I used PICkit2 as main programmer. For now, I can use reborn USBPICProg as a backup programmer.