Thanks Steve.
This is the first HD prject for the Avid editor, and they actually discovered that they could not capture the HDCAM footage for the final layoff with their setup to ouput to HDCAM.
This caused some confusion about aspect ratios with the footage they did capture from HDCAM for the offline.
I think the answer for the AE project comp is:
1920 x 1080, 30 fps (or maybe 29.97), square pixel.
maggie