Please see my previous article about how to generate an eps chart from from MS Excel.
You can also insert Word pictures into eps. The mechanism is the same as Excel. First, make an empty word document or page to draw the vector graphs. Then print the page, using general eps printer. Lastly, modify the page bounding box of the eps file so that it fits the graph.
There is one thing to notice though: the coordinate counts from bottom left to top right! If the four numbers represent top left and bottom right, the picture will still show in latex document, but it will be sqeezed together with text because the size is below zero!