  For $\g=sl(n)$ we construct a two parametric $U_h(\g)$-invariant family of
algebras, $(S\g)_{t,h}$, which defines a quantization of the function algebra
$S\g$ on the coadjoint representation and in the parameter $t$ gives a
quantization of the Lie bracket. The family induces a two parametric
deformation of the function algebra of any maximal orbit which is a
quantization of the Kirillov-Kostant-Souriau bracket in the parameter $t$. In
addition we construct a quantum de Rham complex on $\g^*$.
