Flickering running Rise of Nations on Windows 7 - Intel HD 4000 Graphics

I played with the old (circa 2003 iirc) game Rise of Nations this weekend while waiting for someone to reply to e-mail inquiries and I ran into a strange flickering problem that nobody seems to have reported on the interwebs, so I thought I would post the solution I found.

Editing the ron2.ini file and setting ForceAGPVBs=1 resolved the issue for me.  Previously the graphics had flickered heavily - especially relating to text boxes.  None of the older solutions (expading resource windows or disabling vsync) worked for me, but this did.  BTW, this was on a 2012 Mac Mini running Windows 7.