planetary invasion games.

Hi
       I am looking for a hex/board type game that can deal with
planetary
invasion. The scale wil be divisional with the smallest element being a
company (as a strength marker rather than detail) . I need the game as
link
between space gaming and dirtside. Can anyone help.  So if anyone knows
of
any modules either commercial or web based that can handle planetary
assault
then I would be very grateful . I am fairly conversant with cyberboard
and
capable of writing my own CB modules so I would be especially pleased if
anyone knows of a CB nbased system I am however not fussy . Any game
system
will do.

Thanks in advance

PS if a commercial game is available, then the sooner I can get this
info
the better as I will be in thge UK for SELWG and thus able to hunt it
down.

   Bob DeAngelis.