If you're looking for backports of SANE for Debian Woody, see Aurélien JARNO's page. Aurélien is co-maintaining SANE in Debian along with me, so you can be assured these backports are of Debian quality.
Adrian BUNK maintains backports of a variety of packages for Woody, too.
The experimental SANE packages that were hosted here (sane-gimp1.3 and xsane-gimp1.3) no longer exist, as GIMP 2.0 is now stable and available in unstable. The sane and xsane packages in unstable now support GIMP 2.0.