Sat Jan 22, 2011 11:00 pm by lax
This is a shady sounding question...
There are no arbitrary limitations on the number of instances you can launch through ISBoxer on a given PC, no.
The first thing that will prevent you from launching more is typically GPU memory. When there's no more GPU memory available to store a backbuffer of the requested size, DirectX will refuse to initialize the new game window and no additional launches will work until GPU memory usage is reduced.