  We consider a generalised two brane Randall Sundrum model where the branes
are endowed with non-zero cosmological constant. In this scenario, we
re-examine the modulus stabilisation mechanism and the nature of Kaluza Klein
(KK) graviton modes. Our result reveals that while the KK mode graviton masses
may change significantly with brane cosmological constant, the Goldberger-Wise
stabilisation mechanism, which assumes negligible backreaction on the
background metric, continues to hold even when the branes have large
cosmological constant. The possibility of having a global minimum for the
modulus is also discussed.

High Energy Physics - Phenomenology;High Energy Physics - Theory