rotation

I am making a spinner. How do I program an arrow graphic to rotate, is there an API? or even better, a built-in function? Or do I need to make individual arrow sprites?

Depends on how complicated the graphic is.
You might be able to use the API and draw an arrow with the polygon function.
Example here. http://www.xtremevbtalk.com/t151610.html

Also, since Toveling answered you before on this question (on the 14th of December)
I'll refer you back to that post for additional links that Toveling provided.
http://www.xtremevbtalk.com/t202356.html

And as previously stated, you could press the Search button (at the top of the page
between the "FAQ" and "Quick Links" buttons) and do a search on Rotate, to find the
complete threads of the links that Toveling provided, and more.