[NTG-context] TeXexec MkII, ConTeXt MkIV

Hello, I have pretty recent installations of TeXLive 2010 (for Cygwin) and ConTeXt Minimals (for Windows). In both installations, running TeXexec reports it is ConTeXt MkII ... but running ConTeXt directly reports itself as MkIV. I would like to synchronize TeXexec and MkIV ... as MkIV ... how is this done -- for each installation? Thanks for your help, Tom.