Line 187. Start there.
Code:
RandClick("middle", Round(400 * $x_ratio), Round(600 * $y_ratio), 2, 2) ;middle of courtyard [waypoint 3]
Change 400 to 380->370->360, etc etc. This will get you closer and closer to the cellar from where you are. You can also change the 600, if you are too high or low.
X = lower the number, the more left you move.
Y = lower the number, the higher you move.
EDIT: You actually seem really really far away, which means you probably dont have the appropriate spec or have your run speed set properly in the INI file. Double check those as well.