I currently created http://www.matthewsteinberg.com and http://www.nanachill.com
I made the rollover text buttons as PNG files with transparent backgrounds. also the edge around nanchill.com I made with a drop shadow and transparant background. same idea. However, on MAC computers it seems to work fine as i want it to look. then i viewed it on an older PC Windows computer and there the transparent background is GREY. How can I correct this problem?