I did a quick search of my home copy of Access, admittedly not the most recent. I don't see anything that will do what you want. Given that a screen shot captures a window and Access doesn't manage windows (Windows does), adding code to Access to do this for you might not be in Microsoft's best (monetary) interests. They might have done it in a newer version than AC2002.
When I searched the forum, I didn't see anything that resembled a straight-out programmed screen capture. I did, however, find a reference to a place that offers a free download to do screen captures.
Try this link:
http://www.wisdom-soft.com/
If this link isn't what you want then I don't see a way to get there from VBA without a LOT more research. If you wanted to get crazy, you might try to find a Win32 Programmer's Reference Manual (multi-volume set) and learn enough about window structure to be able to copy the window to a bitmap.
If you have the form open, it has a window handle (property .HWnd, I think), so you can directly reference it via its window identifier. The catch is to open an application that would do the work for you in capturing the bitmap that is the visual rendition of the programmed construct that is the window. This IMPLIES that you are sending a bitmap to a program that can handle bitmaps. Paint can do it but I don't know of a way to reference PAINT from VBA. (I don't believe it responds correctly to CreateObject in an attempt to open an application object.) If you find a way to open the clipboard from your version of Access, there is hope for you do control the clipboard. Other than that, I have no clue.