(It's my first instructable , and appologizes for my poor english !!)
When i see this two instructables :
i want to do the same think !
First , i want to do this with the gold cartridge of Zelda , but it's was too expensive and when i mean it was a sacrilege !!
i have a Mario Bros/Duck Hunt , so i decide to use it.
I use also for my project a small hard disk (20go) and a USB - IDE cable adapter (4.62 $ at ebay seller "keyhere" ).
in the center of the box , i started to cut the hole for the screw whtih my smalls knifes and i use my dremell to make all flat as possible.
I wire one by on , the usb adapter and the 44 pins connector , i use for this a old ruban cable for floppy drive.
To solder , i use this excredible solder paste (dealextreme, sku 4711 , only 3.57$) .
You put the wire in the paste and when you touch with the solder iron , you have à solder !
I solder the mini usb , i use again the hot glue gun .
I cut a small piece of plastic , i screw a screw ( was shortened)for obstruct the middle hole (and also for the small detail ...) , i fix the plastic with the screw inside.
I put the original game ,
I put all in the nes box , i fix the mini usb by the hot glue gun (again and again!!)