i want to create a portal using ASP.NET for intraweb of our company. As i am new on this subject i wanted to make a use of MS source (samples.gotdotnet.com/quickstart/aspplus) but it doesnt work correctly... Any help any idea will be great!

You can write it in a config file ofcourse. Then you can get from there to your connection string. But you know that it is not secure. Maybe it is not so important for you.. If it is important, you can enchrypt it. this means a lot of work :)