No Mary!
Don't tell your guy to make it a megabyte!
Two reasons:
1. There are still a lot of people with modem connections
2. You increase your chances of people doing stupid things to you with increased file size.
Speaking from experience as a TV, video and graphics guy, there's rarely a reason for a picture to be as large as megabyte when you're only going to view it on the average computer monitor.
Good luck,
Tim J.