How to read a local file using as3 in a flash object in HTML? [urgent]

My web site contains a flash object.
I want to use as3 to read some local .txt file
by getting the user directory of the file.
i know AIR can support this by sth like:
File.desktopDirectory.resolvePath
but when i open a AIR file for this, it seems
the action cant be run when i embed it in html.
And i tried to use the above function in a normal
flash file in the action script.
But it cant recognize the File. class..
How can it be done ?
It's reli urgent,
please help...
Thanks !

a web based flash app can't detect user directories. you can use the filereference class'es browse method to let the user locate a file in any directory the user wants. flash can then retrieve the file's name and type. but, as mentioned before, flash can't determine the file's directory.

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How to read a local file using as3 in a flash object in HTML? [urgent]

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