  We study collective wind configurations produced by a number of massive
stars, and obtain densities and expansion velocities of the stellar wind gas
that is to be target, in this model, of hadronic interactions. We study the
expected $\gamma$-ray emission from these regions, considering in an
approximate way the effect of cosmic ray modulation. We compute secondary
particle production (electrons from knock-on interactions and electrons and
positrons from charged pion decay), and solve the loss equation with
ionization, synchrotron, bremsstrahlung, inverse Compton, and expansion losses.
We provide examples where configurations can produce sources for GLAST
satellite, and the MAGIC, HESS, or VERITAS telescopes in non-uniform ways,
i.e., with or without the corresponding counterparts. We show that in all cases
we studied no EGRET source is expected.
