The only product similar to a weed 'n feed I would recommend is corn
gluten meal and it is not marketed as such. It is a natural
pre-emergent
herbicide as well as having some good fertilization ability, specially
when used on lawns. Otherwise, any organic lawn fertilizer is
preferrable.

As Pam said, for future reference, corn gluten pre-emergents are
wonderful! They prevent weeds (and any other plants for that matter)
by inhibiting the seed's ability to produce roots. The weeds simply
can't sprout from seed. The product is not hazardous to humans, pets,
birds, or insects. You can even apply it to your garden when your
plants are beyond the seedling stage, as again, it only prevents seeds
from sprouting yet it's harmless to growing plants. And best of all,
your precious baby can go out crawling on the lawn the moment you're
done applying it!

I know this advice is of little use to you *this* year, but next year
pick yourself up a bag of this stuff. "Concern" makes it and calls it
"Weed Prevention Plus". It's available online at
http://www.victorpest.com/lawncare/weedprevention.htm

Timing is critical for apply pre-emergents, and should be done just
about the time daffodils and crocus appear in your neighborhood (which
is right now in mine). As for fertilization, that should really be
handled as a separate chore, once your lawn is actively growing and
hungry for some feeding. Compost is an excellent choice, though I
never seem to have enough of the precious stuff to use it on my lawn.

Best o' luck to you.

-Fleemo