ReamTocket

If anyone can help me, it would be greatly appreciated. I have Heartgold and a 3DS, and have been trying to get PKHex working so I can get the Pokemon not on the game. I've downloaded the PKHex software, and the svdt software it recommended I download, but it is still not working. I'm feel like I'm missing something, so if anyone could help me get PKHex working I'd be very grateful.