[Plugin: Gravity Forms Directory] How to calculate a column $ value for all entries?

I am using the Directory addons, works perfect. I am using this on a local install to keep track of my jobs and upcoming jobs. I have created a text field called “value” so that I can type in the $ value of each job I do. All my entries show in a perfect table and is looking exactly like I will want. I am looking for a way to add a field somehow that will calculate my complete column of values and output the total somewhere. Is this possible, and if so, how can I try do this.

I prefer to use gravity forms to build out my entry form for entering my jobs and the values rather than just using a standard spreadsheet, but the job value has me a bit stuck to set up a calculation.

Ciaran

http://wordpress.org/extend/plugins/gravity-forms-addons/