The B -> D*l nu form factor at zero recoil

We describe a model independent lattice QCD method for determining the devi ation from unity for h(A1)(1), the B --> D*l nu form factor at zero recoil. We extend the double ratio method previously used to determine the B --> D l nu form factor. The bulk of statistical and systematic errors cancel in t he double ratios we consider, yielding form factors which promise to reduce present theoretical uncertainties in the determination of \V-cb\. We prese nt results from a prototype calculation at a single lattice spacing corresp onding to beta = 5.7.