[Trisquel-users] Re : I know this is silly, but is there a GNU replacement for mspaint?

That is another world: vector graphics (à la Inkscape) rather than raster graphics (à la GIMP).But you are right: that may be what he actually wants.

[Trisquel-users] Re : I know this is silly, but is there a GNU replacement for mspaint?

If you kept your child soul, you can install Tux Paint too: http://tuxpaint.org/