Yes, this isn't a so much a *Perl* problem as it is a "How can I access a file on a remote server?" problem.
If you can mount the directory, then it would be a trivial solution -- just open the file and process.
If there's a webserver running on the AIX box, just write a CGI script that serves up the file. Then, modify the CGI on your PC to pull the file (via LWP::UserAgent) and process as necessary.
If not those, then PUNT. Either use FTP or SCP to pull the file onto your PC and process accordingly.
Which of these solutions is feasible for your configuration?
Where do you want *them* to go today?