When do you think a preloader is necessary?  How large should a swf file be to justify it?

I'm looking for opinions on preloaders.  When do you use a preloader?  How large must a swf file be before you to put a preloader in it? I am working on a small program that is 80kb in size right now and I'm not sure if I should add a preloader.

About 500kb, you should use a preloader.
Below? It depends on your file. If everything is on frame 1 , maybe it's better to use one.
You can test it  with "Simulate Download" (Control - Test Scene ->  View - Simulate Download)

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    Murray --- ICQ 71997575
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    ==================
    http://www.dreamweavermx-templates.com
    - Template Triage!
    http://www.projectseven.com/go
    - DW FAQs, Tutorials & Resources
    http://www.dwfaq.com - DW FAQs,
    Tutorials & Resources
    http://www.macromedia.com/support/search/
    - Macromedia (MM) Technotes
    ==================
    "jlrowedog" <[email protected]> wrote in
    message
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    >I am working on a site which has a swf movie as a
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    > id,
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    > previewed in
    > a browser. Is there a reason that the swf file always
    takes on top
    > position in
    > the browser? Do I need to change something in the
    SWFoject javascript
    > file, in
    > the code or within either the CSS file or the
    dreamweaver HTML code? Here
    > is a
    > link to a site that is very similar to what I am working
    on.
    >
    >
    http://www.pronghornclub.com
    >
    > Any help would be most appreciated.
    >
    >
    >

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