✔ 最佳答案
If you just save in powerpoint 2010(pptx file),powerpoint 2003 can't open it. You may save your powerpoint in 97-03 version(ppt file) to make your friend can open it.But some function can't work in 03.So the best method is that you ask your friend to update powerpoint 03 in
http://www.update.microsoft.com/microsoftupdate/v6/default.aspx?ln=zh-tw
to makes the powerpoint 03 can open 2010 file. So that you can save as 2010 (pptx) file.
P.S. your friend's powerpoint must be 正版!!!
Hope can help you!