Next--to--Leading Order QCD corrections to $B\bar B$--mixing and $ε_K$ within the MSSM

We present a calculation of the QCD correction factors $\eta_{2B}$ and $\eta_{2K}$ up to Next--to--Leading Order within the MSSM. We took into account the region of low $\tan\beta$ for the Higgs-- and chargino sector while neglecting the effect of gluinos and neutralinos.