Training guide to 99 smithing :
http://runescape.wikia.com/wiki/Pay-to-play_Smithing_training
And for PoP, you need a 99 in at least 1 of the following skills:
Fishing, Slayer, Runecrafting, Herblore, Prayer, Thieving, Hunter, Cooking, Construction.
And it'll take a month or 2 if you do it on avg efficiency.