Thanks PowerPC603, I'll research how to create one image with the relevant textures on it. Thanks for the advice about my approach of using 3 separate images dragging down the frame rate. After your advice I found this:
http://www.blitzbasic.com/Community/posts.php?topic=44300
Which seems to provide the kind of guidance I need.
http://www.blitzbasic.com/Community/posts.php?topic=44300
Which seems to provide the kind of guidance I need.