I CAN'T CREATE CONNECTION WITH MY DATABASE

First of all See the Menu of your visual studio .NET2005  and click on the

Menu Tools and select the options  Connect to DataBase  full fill the open wizard on the basis of your requirement i.e by giving DataSource ,Server Name etc. you can click the radio button either

Use Windows Authuntication or Use SqlServer Authontication on the basis of your database place.and then after click the button ok and maintain the connection

 Now See the Server Explorer and select that one.Then you will see the Data Connections icon and his child icon that will be your connection string so Right click on the child icon and go to the Properties option then you see the connection just bring the cursur over the Connetion String option and Copy the string there will be data sourse , Initial Catalog, Integrated Security , provider  available.Just maintain every thing in Web.Config file according to the value of the connection string given, you can make the connection through the database.

Thanks