Employee Utilization

Anyone run a professional services organization?  If you do, how are you managing utilization?  Typically you want to manage the ratio between billable and non-billable events.  Most consulting organizations want about a 70% ratio if you can.

Anyone able to create a report that has this?  We have the advanced project module but it only provides two metrics: job hours and total hours.  Total hours is great but I need a way to get a report by employee with the columns: Billable Hours, Non-Billable Hours, Ratio.

Job Hours in the advanced project module is useless, as well as the Employee Utilization report that comes with that module.  Having a ratio of Job Hours vs. Total Hours doesn't tell you anything because you don't know how many of those hours were billable or not.