If a column for Billing Date could be added. It would be a handy reference to manually adjust the date range on the Usage Page. Otherwise, its more back-and-forth to other pages. The one column would make this page more powerful.
Also, the date fields would be more friendly if they had a pop-up calendar. It helps give context to the days selected.
See: http://developer.yahoo.com/yui/examp...container.html
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