For lighting a fire in a survival situation, you can use both a strike anywhere match alternately pushed into cardboard with a windproof match. Make a row of about 10-15 alternating strike anywhere and windproof matches then dip everything in melted wax. This will keep both matches safe and dry from water or dampness.
To light a fire cut off section of one strike anywhere and one windproof match, expose the strike anywhere match head then strike to further ignite the windproof match, the wax covered cardboard will further burn for an additional 1-2 minutes.
If you can't get a fire going using this match setup then you need bring along some Coleman gas or Methylated spirit as well
Knowing how to light/stike a match could be crucial as well.
http://www.youtube.com/watch?v=UsbSMplJ6g4