.NFO files and .PNG images

hi, i'm having troubles converting ascii extended symbols, for exaple one of them looks like that 'Ü' in win, but in unicode, or old ibm dos extended ascii its black box. most of ascii art using this and sign like that. what id like to do is create dynamic .png image with content of some ascii file. so far i have no luck, i spent whole night and i cant find a way to convert those symbols. iny ideas? please help ;) -- Using Opera's revolutionary e-mail client: http://www.opera.com/m2/