deb http://ftp3.nrc.ca/debian unstable main contrib non-free deb http://ftp3.nrc.ca/debian experimental main contrib non-free(Once debian30.math starts syncing with ftp3.nrc, which should be Real Soon Now, I can change those lines to use the local mirror.) Now I have evolution 1.5 and firefox 0.9 and stuff. YMMV. Note that if you don't know what a sources.list is, you probably don't want to run experimental packages.