About two weeks ago, I gave up on the seed--it had never come up at all--and decided to get a few pieces of sod at a time and try that way. The sod tried to die on me, but then started coming back; and around that same time, all the grass seed started sprouting! Hooray!
P.S. - I'm about to take my yearly camping trip, so I'll be gone for the next 7 days! See you with pics when I get back. :)