I agree with the others who recommend you go for the MBA. There are a few MBA programs with accounting concentrations available. I'm currently enrolled at Upper Iowa University.
Online Program - Extended University - Upper Iowa University
Another excellent accounting program is at Florida Atlantic University.
Welcome to Florida Atlantic University and at
Online Masters of Accounting Undergraduate accounting degrees are not required. You may have to take a few prerequisite accounting courses.
Another option is to get a graduate certificate in accounting. Independent study at LSU has a good one.
LSU Independent and Distance Learning