This is old gear, I no longer use exactly this setup, but feel free to comment and ask questions anyway.
Examples of my work:
http://micromacrophoto.com/
The Macrolume flash from Promaster can be purchased here:
https://www.facebook.com/sharer/share...
REMEMBER: you still need to buy the hotshoe module for Nikon, Canon, etc.
Total price is around $100 which is very decent for something that is MORE than a ring flash.
The generic Chinese extension tubes I talk about ($10!)
Look them un on eBay, you will find them on any brand mount you need.
The 60mm True Macro Nikkor I talk about:
http://www.kenrockwell.com/nikon/60mm...
The 2x Teleconverter (BOWER):
http://www.amazon.com/Bower-SX4EOS-Te...
The rest of the stuff is easy to find.
If you have any questions or just want to comment, please do so! :)