The lightest neutralino of R-parity conserving supersymmetric models serves as a compelling candidate to account for thepresence of cold dark matter in the universe. In the minimalsupergravity (mSUGRA) model, a relic density can be found inaccord with recent WMAP data for large values of the parametertan β, where neutralino annihilation in the earlyuniverse occurs via the broad s-channel resonance of thepseudoscalar Higgs boson A. We map out rates for indirectdetection of neutralinos via (1) the detection of neutrinos arisingfrom neutralino annihilation in the core of the earth or sunand (2) the detection of gamma rays, antiprotons and positronsarising from neutralino annihilation in the galactic halo. Ifindeed A-resonance annihilation is the main sink forneutralinos in the early universe, then signals may occur in thegamma ray, antiproton and positron channels, while a signal inthe neutrino channel would likely be absent. This is in contrastto the hyperbolic branch/focus point (HB/FP) region where all indirect detection signals are likely to occur, and also incontrast to the stau co-annihilation region, where none ofthe indirect signals are likely to occur.