This is a small utility I wrote to help me generate Rounded Corner .png files for different web development projects. The program is supplied a corner image and then generates the other 3 corners as well as the left, top, right, and bottom images. In addition the program generates the HTML table so you just need to copy and paste that into your HTML page.
When I'm creating web apps, espcially in the early stages I like to create rounded corners quickly. I wrote the RTLCornerCreator utility to help me do that. I supply it a corner piece and it generates the images I need and also creates the HTML. Then it saves them to either my NarrowBorderLibrary or ThickBorderLibrary folder.
The utility was written in VB.Net and the source code is included with the download. In addition I have an Optimize button at the bottom of the screen. This runs a batch file that uses the PNGOUT.exe utility written by Ken Silverman. You can download that utility from his site here : http://www.advsys.net/ken/utils.htm , the file is not included in my download. Just copy it to the same folder as you place the app (which also contains the Optimize.bat file) and it'll run when you click the Optimize button. If you want to use a different utility you can just rewrite the Optimize.bat file.
Below is a screen shot of the app, it'll work with very large rounded corners or very small. One restriction is that the corner you provide needs to be a .png file and the background color must be #FFFFFF. You can change this in the code.

Click here to download the RTL rounded corner creator with VB.Net Source
If you add any cool features or found the utility useful let me know.
Ken@RTLogicSystems.com