Mojca Miklavec
With MikTeX you cannot use LuaTeX (not to say that currently with MikTeX you cannot use ConTeXt at all :), but I often had MikTeX + ConTeXt minimals installed, and if I needed, I executed setuptex when I needed the minimals.
I would suggest you to install TeX Live 2008, and you'll get both LaTeX and LuaTeX working, also on Windows. You can always have a copy of minimals just to be sure that latest features are working, and enable them only when needed.
Mojca
Thanks What if I install TeX Live 2008 and extract the following to a local tree? context/current/cont-tmf.zip 2008-08-05 18:50 context/current/cont-img.zip 2008-08-05 18:50 context/current/cont-fnt.zip 2008-08-05 18:50 context/current/cont-ext.zip 2008-08-05 18:50 context/current/cont-ppc.zip 2008-08-05 18:50 context/current/cont-mpd.zip 2008-08-05 18:50 Mohamed