Jumping Help

Ok,
I looked in my ALREADY translated to english rpgmaker2k3 help file for
the Jump event help.I can't seem to find it anywhere.Not even in my rpgmaker2k help file.so...can ANY1 tell me how to make my character JUMP
by the push of a button?Oh and I elready know howto make a mini video where my character jumps...blahblahblah....blahblah.....But I DO NOT
KNOW howto make him jump any time I press "S" for example.(I said that last line so I could be spared the noob answares so whoever helps will actually do so.) -frosted_snow