Very sorry for the cross posting, But I am getting artifacts in lesson 10 if I change line 547 to make the window display at 1280x1024. Code can be found for this mod at http://www.ug.it.usyd.edu.au/~jgre5893/index.html Further details about this problem I am having can be found at: http://www.gamedev.net/community/forums/topic.asp?topic_id=381076 Once again, sorry for the cross posting. Thanks people --Josh