Step one:

Download the emulator

Netsicle

Step two:

Unzip the emulator to c:\nintendo

for specific instructions click here

Step three:

Download Games

becuase the posetion of comercial roms is illegal...

you must go here to download them http://www.emuhq.com
(you have to look for them)

Step four:

Unzip your games to c:\nintendo

for specific instructions click here

Step five:

go to the folder named: c:\nintendo and double click Nestcl95.exe

Step six:

Go to "file" then "load rom" choose the game you wish to play, and double click it.

Enjoy!