simple sorting noob

How can I sort-lines within a region according to the characters after the first tab? this commandline: "(sort-lines +2 (start end))" does not work with the data shown below: data: ubh51.0001-0172.178H07.2.~~.~.~ pNICCH ubh51.0001-0246.165G07.1.01.~.~ pET28MHL ubh51.0001-0246.165H09.2.01.~.~ pET28aLIC ubh51.0001-0246.165H10.2.01.~.~ pNICCH ubh51.0001-0246.165H11.1.??.~.~ pET28GSTLIC ubh51.0001-0246.165H12.e.nd.n.~ pMALp2e ubh51.0001-0246.166H02.~.~~.~.~ pTYB2 ubh51.0001-0246.178G10.0.~~.~.~ pNICCH+1G ubh51.0001-0246.178G11.0.~~.~.~ pNICCH+2G ubh51.0001-0246.178G12.0.~~.~.~ pNICCH+3G ubh51.0001-0246.178H01.0.~~.~.~ pNICCH+Thr ubh51.0001-0246.178H02.0.~~.~.~ pNICCH+Tev ubh51.0001-0246.178H03.0.~~.~.~ pNICCH Sirano <http://www.sgc.utoronto.ca/pmwiki/pmwiki.php?n=ubiquitinbiology.HomePage> _______________________________________________ XEmacs-Beta mailing list XEmacs-Beta(a)xemacs.org http://lists.xemacs.org/mailman/listinfo/xemacs-beta