To determine if you have this problem

1. Open a PDF file from the web by clicking "Open" when asked if you want to Open or Save the file.
2. Close the PDF window or click the "Back" button on your browser.
3. Check the programs loaded in memory by depressing Ctrl-Alt-Del then scrolling through the list looking for "Acrobat."

If you don't see Acrobat in the list, you're all set and need go no further. If Acrobat is in the list one or more times, continue with the following procedure after clicking on each occurance of Acrobat then "End Task" until all copies of Acrobat are removed from memory.

If you'd rather have PDF files appear in a separate Acrobat window, you can enable the browser to use Acrobat or Acrobat Reader as a helper application. Internet Explorer or AOL then starts Acrobat or Acrobat Reader, which displays PDF files within an Acrobat window instead of within the browser window.

To configure Acrobat or Acrobat Reader as a helper application:

1. Exit from Internet Explorer or AOL.
2. Start Acrobat or Acrobat Reader.
3. Choose Edit > Preferences > General (Acrobat 5.0 or Acrobat Reader 5.0) or choose File > Preferences > General (Acrobat 4.x or Acrobat Reader 4.x).
4. In the Options section, deselect Display PDF in Browser (Acrobat 5.0 or Acrobat Reader 5.0) or deselect Web Browser Integration (Acrobat 4.x or Acrobat Reader 4.x)
5. Click OK, and then exit from Acrobat or Acrobat Reader.
6. Restart Internet Explorer or AOL.