Image Rollovers

Rollover help needed form ASP.NET
Hi, I have created a rollover buttons in Macromedia Fireworks version 4. When I see the preview in the browser from Fireworks, it works just fine. Now the problem is that I want to integrate that into ASP.NET and when I try to make an image button in ASP.NET and put the source image as the .PNG file, I cannot see the rollover. I tried to make the same in Dreamweaver and the browser preview looks fine and images change, but when I save those pictures as gif and try to put them into .NET, it does not work and there is no rollover. Can someone please let me know why would this happen and what is the way out. Thanks in advance.
Tejas

Since you have Dreamweaver and you know it is working there, I would just copy the bit of code from Dreamweaver calling that image and paste it in the HTML section of your ASP.NET form. If there are script tags keep those too.

Even if you are using code behind you can still treat the HTML portion the same as you would with any other HTML editor.