moving objects in a window

Hi,
I am currently starting to desig a program that will move an object (most probably an image of a a circle) around an area with grid lines of equal length using data from a file. Accessing a file is no problem. The graphical part is a little hard right now. I am familiar with MFC and visual studio .net 2003. I was wondering if anybody had any suggestion of how to go about doing that and what functions might be useful. Thanks a lot,
Amish

look at 'double buffering', plenty of code here.

GDI / GDI+ watch for GDI leaks (lost GDI objects when using SlectObject() )

GetDC()
CreateCompatibleDC()
CreateCompatibleBitmap()
SelectObject()
LineTo()
CreatePen(), CreateBrush() ect
FrameRect()
Elipse()
DeleteDC()
ReleaseDC()
DeleteObject()

BitBlit()
GetUpdateRect()
............