accretion during outburst, due to a thermal instability that causes cyclic changes of the accretion rate, releases gravitational potential energy identified as the DN outburst. The high accretion rate ($\sim 10^{-8}$ to $10^{-9}$ $M_{\odot}$/yr) outburst phase (which lasts a few days to weeks) is preceded and followed by a low accretion rate ($\sim 10^{-11} 
M_{\odot}$/yr) quiescence stage. This DN behavior is believed to be punctuated every few thousand years or more by episodes of catastrophically unstable thermonuclear burning, the classical nova explosion. Perhaps the least understood topic in CV/DN research (along with what drives the wind outflow in outburst) is the state and structure of the boundary layer and accretion disk during quiescence and the physics of how long term accretion of mass, angular momentum and energy affects the WD. Our studies with archival [*[IUE]{}*]{}, and [*[HST]{}*]{}/STIS have found that $\sim$50% of the DNe in quiescence are dominated (i.e., $>$ 60% of UV flux) by a component of FUV flux other than the WD called the “accretion disk”; $\sim$25% are dominated by the WD and $\sim$25% have nearly equal contribution of WD and accretion disk (40-60% each) [@urb06].

A number of studies [@ara03; @sio91; @sio99; @urb06] have shown that CV 