  The measurement of the cosmological parameters from Type Ia supernovae hinges
on our ability to compare nearby and distant supernovae accurately. Here we
present an advance on a method for performing generalized K-corrections for
Type Ia supernovae which allows us to compare these objects from the UV to
near-IR over the redshift range 0<z<2. We discuss the errors currently
associated with this method and how future data can improve upon it
significantly. We also examine the effects of reddening on the K-corrections
and the light curves of Type Ia supernovae. Finally, we provide a few examples
of how these techniques affect our current understanding of a sample of both
nearby and distant supernovae.
