JavaScript: Validate Path - CornedBee can you help? [URGENT]

[RobDog888]

I need to validate a folder path before I do a save as in Acrobat 5.0.
I have developed the code to perform the saveas, I just need the
validation and filename generation code.

How do I access the file system with JavaScript?

Also, I need to check for the largest filename (numeric) for the auto filename generation script.
ex. validate path.
/D/Development/UserName/

ex. check file names in that directory (if valid).
123452003.pdf
123462003.pdf
123472003.pdf

Then generate the next file name and save.
/D/Development/UserName/1234832003.pdf

Thanks for any assistance.