Just type in the 4 means in a 2 cell by 2 cell space in Excel, then highlight these data and do the create graph function (I'm using Office 2007 now, so I don't remember what it is called exactly in Office 2003, it might like Insert>Chart; do a line graph). I just did it and it drew a nice disordinal interaction graph for me. You'll have to do some work to make sure that the axes are correct and the chart is labeled properly, but that's the gist of what I believe you're trying to do.