There is a wealth of homeschool material that is of a secular nature. We are orthodox Catholics, but I didn't use 'Catholic' homeschool materials with our kids, with the exception of religious instruction because I wanted them to have a broader view of life. I included Catholic materials as a supplement, though, to give them the whole picture, because some secular textbooks are dismissive of religious ideas. I'm using the 'Classical' approach with our daughter. If you can find a copy of "The Well Trained Mind" at your library, take a gander at it. Some of their ideas come from a 'Christian' perspective, but not overly so. It could easily be adapted for use by a non-Christian family.
Now, as for the "Well Trained Mind" read it and found it to be a very good book. It will definately be used by this (hopefully) future parent.
I am more worried with this Michael character...he seems to be anti-religious in general and just not a very tolerant fellow. I admit I am a bit secular (Haven't been to temple since my wedding.) I think sadly, the last "acceptable" discrimination is against religious folks of any stripe. I may not be as religous as perhaps I should be, but I know there is a god, and one day, I will meet him, and he and I will chat. Dunno what will be said, but I think it will be interesting.