Hi: ODS MSOFFICE2K is an HTML based destination. This means that internally to the HTML, any image -- any logo, picture, graph is referenced with an <IMG> tag in the HTML. So when SAS creates output, in the absence of any instructions from you, the PNG image is created in the working directory of your SAS session. When ever you create an HTML file, whether with ODS HTML or ODS MSOFFICE2K, you need to send the HTML file itself and then any external files, like CSS or PNG files that the HTML files is referencing. This is an argument AGAINST using ODS HTML or ODS MSOFFICE2K for email. In fact, many email administrators do not want you to send HTML files in the body of the mail or even as attachments. Or, sometimes they block mail that contains HTML tags.
It might be better for you to make an RTF or PDF file with ODS (in which the image will be embedded INSIDE the document and will not be a separate image), and then send the RTF or PDF file as an attachment.
cynthia