Have you burned it as .br5 or .tif or .jpg or what? Can your school computer recognise the format? Then, how do you open it? autorun.inf, double clicking on the file itself or you open it in an image-viewing program? If first, is the path correct? Have you put in a drive letter that your school computer doesn't have? If second, have you tried (shift-)right-clicking and opening it in a program different from the default one? If the last, is it possible that it's an older version which doesn't exactly recognise the format of the pic?

-- erlik