Have a look at GeneDoc for PC windows.
>I've also tried to find such a program but didn't succeed. The best
>alternative that I know of is using a spreadsheet program (like Excel).
>These programs can read your alignment (as ASCII) putting one character
>in each cell and allow to put lines at one or more sides of each cell so
>you can "draw" your boxes.
>Not really convenient but better than drawing the boxes by hand.
>Hope this helps
>Klaus Salger phone : +49 (0)89 5902 -502
>Zoologisches Institut FAX : -450
>AG Wetterauer e-mail: salger at zi.biologie.uni-muenchen.de>Luisenstr. 14