Hey Wayne
If your project is already complete then you could just do yourself a great big favour and simply stop worrying about it … master it onto an HDV tape as is and take that to your local facilities house and have them dub it onto HDCAM for you. Job done. Or if you want to make more of an effort (if its graphics heavy or for some reason you thing it will greatly benefit) then duplicate the final master sequence and switch the sequence settings of that duplicate to Apple ProRes 422 (use the Load Sequence Preset option at lower left of the Sequence Settings window), select everything in that sequence and choose Modify > Conform to Sequence, and then Export > Quicktime Movie w/ Current Settings, Make Self Contained. Again, take that to your facilities house and have them master it to HDCAM. Really no need to worry about field dominance and pixel aspect ratio’s etc.
Hope it helps
Andy