Uploading files web service with NTFS security

[wym]

I have written a web service that provides the following methods:

UploadFile
SetNTFSSecurity

Their purpose is to allow a user to Upload a file to a shared folder
with "Everyone" as permission and using SetNTFSSecurity , allow for
tighter security on the files (remove the propagated "Everyone" from
parent folder and add specific users to the ACL.

My problem is putting it all together...

Problem 1:

In my aspx page, I would like to allow the user to upload entire
folders and for each file in folder, use the UploadFile service.
Currently, I'm using an html input button of type file, which only
allows you to choose ONE file at a time.

<INPUT id=uploadedFile type=file size=31 name=uploadedFi le
runat="server">

After the file is chosen, I add it to a listbox. The user will keep
on adding to the listbox for the files to be uploaded. Finally, there
is a server side button which will call the UploadFile web service for
each file in the listbox. Obviously, this is extremely tedious for
the user and I'd like to simplify things by just allowing the user to
choose an entire folder and then recurse my way through it to feed
each file to my web function.

I'm willing to look at third party controls if the solution is too
complicated.

Problem 2:

After I have uploaded the files to a file server, I'd like to set
security on them. I'm using ADSI's ADsSecurity.dll to set security.
In my machine.config, I have set the process to run under my
username/password. I am an administrator on the remote file server
but for some reason, I can't set the security on it. This function
was written based on KB 279682's script. I'm able to set the file
security of a remote machine, but not with the web service? I can
however set security rights if the file server and the web service are
on the same machine... Does anyone have any experience with this?

Again, I'm willing to look at a third party solution.