There's no item known as the Darkness Key in Pokemon. At all.
go to denver
It opens a door to your life @(^-^)@
94000130 000000000000
beat exacutive patral in the radio tower and he gives you the key.
Why are you playing yellow? Heart Gold and Soul Silver were just released.
Well, you can't, really. I mean, it's a key item (and if you COULD sell them and did, the game would be ruined).
get the darkness 8 key
Use it to get into a buliding
apcorn in key itims
The basement key is used in the Goldenrod underground. You get it while rescuing the Radio Tower from Team Rocket - specifically, after defeating a Rocket Executive disguised as the director.
You should iook it up on youtube and do it from there
okay first you go to