Unifying Contradiction

Help! Is there a MAC enthusiast in the audience? It turns out that when folks visit the penultimate page of my website using Netscape 4.x on a Mac, none of the form buttons appear. I can't duplicate this without a Mac, so I can't debug it. Is there anyone out there with a Mac who is willing to spend a few hours on the phone with me trying different things to see what is and is not working?