  We investigate the enhancement of neutralino relic density in the context of
a realistic cosmological scenario with Quintessence. The accurate relic density
computation we perform allows us to be sensitive to both cases with shifts in
the abundance at the percent level, and to enhancements as large as 10^6. We
thoroughly analyze the dependence on the supersymmetric spectrum and on the
mass and composition of the lightest neutralino. We point out that
supersymmetric models yielding a wino or higgsino-like lightest neutralino
become cosmologically appealing in the presence of Quintessence.
