[gentoo-user] ReactOS on virtualbox: VERY small viewport?

Hi,

I need a "windows" only for the purpose of flashing th.e firmware of
my NiMH-charger because the vendor forgot, that there are other OSes
alive on this planet earth.

I tried ReactOS via virtualbox...and yes it "runs"...  But the given
screen is /that/ tiny, that even the desktop of ReactOS does not fit.

Hmmmm....

I earned about some problems of the correct implementation and
installation/usage of layer eight of some software/OSes and the
handling of them so better to ask, what may the reason for this tiny
screen...?

Virtualnbox?
ReactOS?
Me?

Cheers
Meino