Excel 2007 : Graphing, Switching X and Y axis

Please help me out with this.

All I'm tring to do is switch my graph so that Weight is running upwards , and Electric Field strenth is running Horizontally. See Attachment

I've been searching on how to do this for probably about 4 hours . Please someone tell me , detailed on how to solve what seems like it should be SIMPLE

The simplest solution is to go to the excel chart in question, right click and click on 'select data'. Go to 'Edit' and select the correct x and y axis for your data.