> Actually, the file will be sitting on and ext2 partition accessed through windows
I didn't think windows could ordinarily read an ext2 partition.

I'm sure it could, with some reading of IFS Kit - Installable File System Kit

But if someone has already done that (they have btw, search for it), then you should be able to get the source code for that (given that ext2 is GPL to begin with - IANAL).
From that, creating the redirect should be fairly straight-forward.