A common Web UI element among profressionally-designed Web sites is that of a table with rounded corners. To see what I mean, just check out the boxes on the left-hand side of Amazon.com, or the boxes on the left-hand side on DataWebControls.com. Creating such a rounded corner interface isn't terribly difficult. Essentially, you use a graphics editing program to create the rounded corners. Then, use an HTML <table> with three columns to display the left corner, the middle, and the right corner.
If you're anything like me, you find using graphics editing programs synonymous with a root canal. I'm just not a artsy kind of guy. Anywho, I created a Web control that utilizes GDI+ to dynamically create those rounded corners for you, and will be writing up an article on 4Guys showing how to use the custom server control and the code behind it. For now, you can marvel at these live demos. I'll post an entry here once the 4Guys article is up (hopefully by late afternoon tomorrow).
(I'll leave you with a teaser: the dynamically generated images (which are only created on-demand, and actually saved on the Web server's file system so that they aren't created every time someone views the page) are GIF files that use a transparent palette color and employ quantization in order to increase the quality of the GIF and decrease the file size. These two issues are what took up the vast majority of the time in creating the control... more on these topics in the coming 4Guys article!)