Demaestro - 3:44 pm on Jul 5, 2010 (gmt 0)
I am quite sure that Flash isn't able, or more to the point isn't allowed to access drives and windows functions like that.
The reason for this is security. If flash allowed programmers to access windows functions the potential for bad if Flash was given access to the file system like that is high.
You can check out the fileReference class, but I am not sure if that will be what you need.