Establish roles for an application. Assign users to roles. Create rules (permissions) that selectively grant or deny access to pages for different rules. Programmatically determine whether a user is in a particular role and which roles the current user is in.

Configuring a Web Site, Membership, and Roles Before you work with ASP.NET roles, you must have a Web site available, and configure the site to enable membership and set up user roles. If you have completed the topic Walkthrough: Creating a Web Site with Membership and User Login (Visual Studio), you can use the Web site that you configured in that walkthrough. If you do not already have a Web site available, use the following procedure to create one. Otherwise, go to the next section "Creating Folders for Member-Only Pages." To create a local IIS Web site Open Visual Studio. On the File menu, click New Web Site. The New Web Site dialog box appears. Under Visual Studio installed templates, select ASP.NET Web Site. In the Location list box, select File System. Click Browse, and then select a directory for your application, such as C:\RolesWebSite. In the Languages box, click the programming language that you prefer to work in. The programming language you choose will be the default for your Web site, but you can set the programming languages for each page individually. Click OK in the New Web Site dialog box. Visual Web Developer creates the Web site and a new page named Default.aspx.

Always make sure you test the display of your Web pages on different monitors with lower resolutions, if you are one of those developers with a sophisticated monitor (1600x1200?).

When designing the layout of Web pages is to let a section of each page be of variable size to fit the size of a large as well as small resolution monitor. 

So look at our browser statistics if you want to see the trends in monitor development. 

Both of the two major Internet browsers (Microsoft and Netscape) have their own specialties and quirks that you have to consider aleays when designing your Web pages.

Always test every page with different types of browsers,if you are serious about your Web site.

The most popular browsers today are Mozilla Firefox and Microsoft Internet Explorer.

Additionally, some of your visitors might use text only browsers, such as Lynx.They might visit your site from an online service like AOL, CompuServe or Prodigy. These browsers may not display your Web pages as you think.

So, when designing Web pages is to use strict, formal and correct HTML (or XHTML) and always make Strict and correct coding will always help a browser to display your pages correctly.

 So look at our browser statistics if you want to see the trends in browser development

Some elements in your Web pages might require the use of separate programs (helper applications or plug-ins) like sound and video clips or other multimedia content.

In your Web pages,don't use such elements unless you are sure that your visitors have access to the software needed to view them.

Some people have hearing disabilitiess or serious viewing. They might want to visit your Web site.

Remember that if you don't provide them with some text based alternatives for pictures and other graphic elements then all of your visible content is lost.Some of them will try to read your pages with speech-based or Braille browsers.

Designing Web pages for people with disabilities is not at all an easy thing.One small thing that you can do - at least for people with poor eyesight - is to let your pages use a resizable font size.