I see... so, you have already hacked a sidewinder circuit board... and your question is on from the circuit board to the buttons itself....
ok... let me try to put it in words briefly....
now... your sidewinder should have a bunch of wires hanging out..... from the direction holes (U, D, L, R) and from the buttons (A, B, C, X, Y, Z, L, R, S, M) and also a ground wire....
now..... on your control panel (bottom view)
http://www.geocities.com/hyiu/Arcade/pics/wires_done_stick.jpgyou might not be able to go there directly... (sometimes, its strange for geocities....)
then go here...
http://www.geocities.com/hyiu/Arcade/pics and click on wires_done_stick.jpg
you'll see the bottons.... and each button has a microswitch... and each microswitch has 3 connections...
now... if you look closely to your microswitch, you'll see them labelled "GROUND", NORMALLY OPEN", "NORMALLY CLOSED" (or GND, NO, NC... etc)
you can ignore the NC connection.... (if your microswitch only has 2 connections, then its by default NO and Gnd.... I think....)
ok.... for sidewinder game port pad, you can connect ALL Grounds together..... and then connect the ground to the gamepad circuit board's GROUND wire..... (so, when this is done, EVERY switch will already have 1 wire connected, and they're ALL connected to the gamepad's GND.... ok ??)
now.... the NO connection.....
you can arrange your control panel buttons any way you want.... so... the NO connection of a particular button will be connected to the appropriate wire from the gamepad...
in my picture, all the wires are connected to a connector, because I'm planning to modulate this process.... (so my joysticks can hook up to a sidewinder hack, or a psx hack... etc)....
also.... from what I read from other posts... you don't need to solder the wire to the controls.... you can buy those female clip-on thing... (sorry... don't know what they're called...) then, if you make a mistake or want to re-arrange, you can just unplug and re-plug it back it correctly....
then you can test it on control panel... (if you're suing Windows....)
hope this helps....
- Henry.