gnuserv, 2 windows and external entities

Hi xemacs wizards, I have 3 small problems to solve: 1) gnuserv is not working. When I type 'gnuserv filename' it just waits forever (xemacs IS running). I browsed through environment->gnuserv with no clear ideas, 2) when I start xemacs with a few files (xemacs file1 file2 file3) it loads them all, but splits the frame into TWO windows (no matter how many files I load). How can I disable this? (I wanto have only one window) 3) No matter what I set as sgml-warn* and sgml-ignore I get "External entity html not found" on files with no fully correct structure. Can I get rid of it? (I know some files are a bit wrong) please, comment on this. thank you very much dominique