How to import classes from an external actionscript file

Question

This is driving me crazy, I've been trying to resolve this on my own for ages, and I've reviewed a lot of different materials, but I still can't seem to just import some external actionscript classes correctly.
I'm using Flash Builder 4 with the Flex 4 SDK on mac osx 10.6
the class I'm trying to import (I'll call it DesiredClass) is in a folder like this
/libraries/com/foreignproject/com/foreignproject/DesiredClass.as
within the class itself, the package declaration looks like this (I left all the guts out for clarity):
package com.foreignproject
    import flash.display.Sprite;
    public class DesiredClass extends Sprite
        public function DesiredClass()
I'm working on a totally different actionscript file at
/Users/username/Documents/Adobe Flash Builder 4/TestProject/src/TestProject.as
in this file I try to import the DesiredClass:
package
     import com.foreignproject.DesiredClass;
     import flash.display.Sprite;
     public class TestProject extends Sprite
          public function TestProject()
          var neatClass:DesiredClass = new DesiredClass();
And then I try to add the class I want to the source path.
I've tried adding each folder to the source path separately:
/libraries/com/foreignproject/com/foreignproject/DesiredClass.as
/libraries/com/foreignproject/com/foreignproject/DesiredClass.as
/libraries/com/foreignproject/com/foreignproject/DesiredClass.as
/libraries/com/foreignproject/com/foreignproject/DesiredClass.as
/libraries/com/foreignproject/com/foreignproject/DesiredClass.as
If I choose the libraries folder or either of the com folders then an error shows up in theTestProject.as file, saying:
Definition com.foreignproject:DesiredClass could not be found.
But f I choose either of the foreignproject folders then an error shows up in theDesiredClass.as file saying:
a file found in a source-path must have the same package structure 'com.foreignproject', as the definition's package, ".
What am I doing wrong? Please help. I bought a book on actionscript, started doing the flex-in-a-week series, read numerous online discussion boards, and I still can't import these classes.
Thanks in advance.

Answer 1

I don't know if this method is supported anymore but you can give it a try.
If you backed up bookmarks in IE using the following directions, you should be good!
*In IE, "File -> Import and Export -> Export Cookies".
*Open newly exported "cookies.txt" in a text editor and put a period before every line that starts with a domain. So a line starting with <b>altavista.com TRUE / FALSE 1388491200 AV_ALL 1</b> will become <b>.altavista.com TRUE / FALSE 1388491200 AV_ALL 1</b>
*Then, move the "cookies.txt" file to your profile folder.
You can get to the Profile folder two ways
*Help > Troubleshooting Information > Profile Directory > Show Folder
or
*Go to '''about:support''' and click Show Folder next to Profile Directory.