Tim, actually, the OPC Presbytery of the Midwest is exploring the possibility of planting a church in the Quad Cities area (it lists "Bettendorf / Davenport"; see here, scroll down to the bottom where it says "Areas of Interest"). Our Regional Home Missionary is Rev. Jim Bosgraf and I highly recommend you contact him. There may already be other Reformed families meeting for Bible studies in your area (maybe, I don't know, but this is usually how plants start). Every individual and family seriously interested really helps and I'm sure he'd absolutely love to hear from you!

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Casey Bessette
Westminster OPC • West Suburbs of Chicago • My Blog: Paradise Regained

"It is part of the calling of the ekklesia to learn to know the love of Christ that surpasses all knowledge and also to make known within the world of science 'the manifold wisdom of God' in order that the final end of theology, as of all things, may be that the name of the Lord is glorified. Theology and dogmatics, too, exist for the Lord's sake." — Herman Bavinck, Reformed Dogmatics, vol. 1, p. 46