If anyone reading this is either at Autodesk or knows the 'right' people at Autodesk then please pass on this report to them:
The arxmgd.chm file supplied with the current ObjectARX 2011 SDK has not been updated. It is still providing info on the 2010 version and NOT the 2011 version of the managed class. Many of us dot netters really need this info. Please correct the documentation.
Thanks,
Kevin.