This is Acrobat Reader #7 running in Windows XP. It seems to
function the same in 2000 Pro.
The controls are basically the same for Acrobat Reader 6.
First you need to download the PDF image of choice.
If there is no "Picture Tasks" button you will find a "Hand Tool" and a "Select
Tool" button as well as a "Snapshot" button.

The "Hand Tool will only move the image around the window.
The "Snapshot" will only copy an image to the "Clipboard" that is low
resolution.
Use the "Select Tool"

When a cross-hair appears on the image, left click on the
image.
The image will darken and there will be a small button.

When you mouse over it (place the arrow over it) the button
expands,
Left-click on the button.

At this point you need to select your favorite graphics program, (or the only graphics program you have), instructions are different for each program.
Instructions for Photoshop Elements {1 & 3}
Instructions for Photoshop 6 and 9 (CS2)
You may notice that this is pretty much the same process as in Acrobat Reader 6 & 8.