  The local density of states (LDOS) around a magnetic impurity in high-Tc
superconductors is studied using the two-dimensional t-J model with a realistic
band structure. The order parameters are determined in a self-consistent way
within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. In
sharp contrast with the nonmagnetic impurity case, the LDOS near the magnetic
impurity shows two resonance peaks reflecting the presence of spin-dependent
resonance states. It is also shown that these resonance states are
approximately localized around the impurity. The present results have an large
implication on the scanning tunneling spectroscopy observation of
Bi_{2}Sr_{2}Ca(Cu_{1-x}Ni[Zn]_{x})_{2}O_{8+delta}.
