Since you are already in Renton Keep (that is if you have been following my walkthrough) you might as well talk to Trisda Sentle and accept the quest Saving Silverlake. After you have accepted the quest you can take the Riftway to Silverlake (yup, there's a riftway straight there! It's on Thestra). Trisda will tell you to talk to a man by the name of Threntin Albeross who is standing next to a fence just outside of the village. Hail him to recieve your first quest.
Well it seems that Silverlake has an infestation of Zar followers, a cultist group using strange magic. They have overtaken the farmers to the west and the URT wishes to assist the residence of Silverlake to gain favor with them. He has requested a tool from the URT in New Targanor that will remove the zar soul that is possessing the farmers, but the caravan delivering the device was ambushed by some halfling bandits! He instructs you to go to the crossroads west of here, where the bandits reside, and retrieve the tool.
So off you go to the farm, where you will find many Crazed and Possessed farmers as well as some of the Zar Cultists who are possessing them. The crazed and possessed farmers will be level 17-18 2dot, but luckily you won't have to kill them (since the whole point of this, is to save them!). In order to save them, target one of the farmers and right click the URT Soul Render once you are close enough to use it. Once the Soul Render does its thing, the farmer will turn into a Dazed Farmer and become none hostile to you. Unfortunately at the same time you will have angered its soul, and the Angered Soul, who is also level 17-18 2dot will attack you!
We have a serious problem. The farmers have not come out of their dazed states! Analysis has shown that not only did you remove the Zar influence within them, but you also removed their very souls! This is not good. The souls have been destroyed, so now the farmers are nothing but mindless zombies. We need to get those farmers out of sight before the people of Lakeview notice. There just happens to be some Zarian Netherbeasts nearby, and their dust will attract the dazed farmers and make them follow you. Why don't you collect 25 Zarian Netherbeast Dust and bring them back to me! Please Hurry!
So, you want your URT legs, right? So get moving to the dazed farmers (they will be marked on your map) and pick one of the dazed farmers to slaughter... I mean cure. Right click the bag of dust that is in your inventory and notice how the Dazed Farmer will follow you anywhere you go (except water, for some reason they don't like to go into water). Bring one at a time back to the Mill (which is also located on your map) and bring them inside the second floor of it. This is where your Sweeny Todd moments will take place. Each time you bring a farmer back to the mill you will need to slaughter him into meat and bone, and pick up the four pieces that he produces. Then you will need to go to the grinder and right click the grinder to process the meat.