Hi Jamie,
there are 2 ways of achieving this.
1 FTP. Use Dialup Networking to connect the remote computer and then download a file. The server polls for a incoming file processes it and places a resultant file for the client to download.
To Achive the following you need :
FTP Access to the Server, Mabry RAS & FTP OCX Controls or Rick Starhl's Internet Utilities.
2. MAPI. Send your File as an Attachment to the other computer. The server reads the email and sends back another Email To You. All you need is MAPI Controls.

Regards,
Fred