I found mine on my Steamworks Home page. There should be a link that says "View Financial Data" somewhere on the right hand side of the screen. Click on that and it will take you to a page that will give you a run down of the money you've made and the number of units sold.

Cool deal! Thank you all for your help!

Ok gotcha. So basically if I came into Steam at the middle of the month, it would make sense to say the first payment probably wouldn't come in until the end of the following month?

Does anybody have any idea when Steam pays developers for the money we've made on our games? I haven't been able to find a straight answer on this anywhere.