how do I place a point in an autocad drawing according to a coordinate ( latitude  and longitude) so that I can later get the coordinates of any other point in the drawing.Let me put is in another way. I have a large area that i need to survey ruffly, a hand held GPS is enough.I have a draft of a very large building to implant on this area.I have 4 point of latitude and longitude (each corner of the building).I want to be able to pick up on autocad extra coordinates( diferent part of the building) and check them on site via GPS.PS: I don't want to spend money on a surveyor at this point.Thanks 

You'll be lucky if those points are within 5 feet of their actual position.  Should look into renting a piece of accurate equipment like the Carlson Surveyor+ RTK GPS System.  It can be accurate down to a couple of inches or less.

Another option would be to convert the latitude and longitude to decimal then enter those values as Northing = Y and Easting = X.See this re: conversion.http://transition.fcc.gov/mb/audio/bickel/DDDMMSS-decimal.html