Mini-DVI DVI to DVI VGA adaptor issues

So, I just bought a snazzy new black MacBook, and am wanting to connect it to my old 20" NEC monitor, which uses VGA. Since I already have a DVIVGA cable that I used with my old tower (and I figure I'll someday upgrade to a DVI monitor), I thought it might save some money to only buy a mini-DVIDVI cable, and use it to connect to the monitor via the other cable.
Everything looked fine and dandy until I actually tried to connect the adaptor cables, which is when I realized that there are 4 extra pins on the male DVI end of the DVIVGA adaptor (2 above and 2 below the longer thin piece on the end), which don't have anywhere to go on the female DVI end of the mini-DVIDVI cable.
I don't want to damage anything and ruin either of the cables, so I don't want to force them and break off or bend those 4 pins, but what exactly do they do, and why are they needed on that adaptor, when they apparently wouldn't be there on regular DVI monitor cables? Would it compromise the integrity of the DVIVGA cable if I did bend them out of the way? Or did I just screw myself into buying an extra adaptor that at the moment is of no use to me?
I'll gladly post some pictures if anybody doesn't understand what I'm talking about and needs to see it themselves!

the extra pins are the analog portion of the DVI-I DVIVGA adapter cable that you already had. they contain the analog RGB, sync, and ground bar that allows the adapter cable to be terminated with a VGA end (VGA is analog).
DVI-D is the same as a DVI-I, except w/o the analog lines... which is what, unfortunately, your mini-DVI to DVI-D cable you bought is. breaking off the extra pins on the adapter would be the equivelant of cutting off the end of the VGA cable, in other words, not good.
you will need to go back and purchase the apple manufacturered mini-DVI to VGA cable or adapter and appropriate VGA to VGA cable.

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