[Genome] Ask for advice on setting up alignment database

[ovalmove]

Dear Mr or Miss,
    I am a postgraduate working in East China Normal University. Recently I am trying to set up a database of 3' untranslated region (UTR) alignment across several species( human, mouse, dog, rat). And I notice that the latest version of your alignment which is availabe now includes at least 17 species(16 vertebrate genomes with huamn). Could you give me some advice on how to extract only 3'UTR part of these 4 species from the 17 species alignment and if it is resonable to do this? I'd appreciate it very much if you give me an prompt reply. 
Thanks a lot!
 Best wishes,
                                                                                                            Kevin Gu
                                                                                                            7-17-07