spmug611 File Transfer by Instant Message Q. Can you use an instant-message service to transfer big files directly from computer to computer? A. Many instant-messenger programs allow you to transfer large files directly from one computer to another, if the computers have compatible I.M. programs and service. Programs like Trillian (www.ceruleanstudios.com) can link users on all the major I.M. services with one program. Check with your particular service to see how much data you can transfer if you have big files to move. In many cases, you can start a message session with a friend on your Buddy List and then drag the file you want to transfer into the message window; check your program's Help guide for precise instructions on transferring files. Make sure you know the person you are exchanging files with, as it's possible to pass viruses and other malicious software from machine to machine. Firewalls can interfere with your connection between machines, however, so you