I don't remember where I got the original Excel doc, but someone once made a doc that let you put in X/Y coords and it would give you the coordinates for all the lines in help.tbl for that specific object. It was good, but it could only do one at a time.
Well I took it a step further. My version is specifically for mainhalls, but you can use it for any retail UI. On Sheet 1, you enter the coords for where the help line should point to, what kind of line you want, and what the text should say. You can also input a few other little bits of info. On the left it builds the entire table for you to copy/paste directly into your text editor.Linky