you can't cross the two. the blooms you pollinated will eventually drop off.
usually, orchids can only be crossed within their own alliance, for example a Dendrobium might be crossed with an Epigenium or a Diplocaulobium. Phalaenopsis is usually treated as its own alliance, but there have been many successful crosses with the Vanda alliance.
again, the member articles section is not the place for questions. Any questions you may have can be posted as a new thread in the appropriate forum.
for information on making hybrids and growing plants from seed, check the
propagation forum.
for a complete list of forums here, check
the forums section.