how to add a list in sharepoint 2010
On the File menu, point to New, and then click Project. In the New Project dialog window, in the Installed Templates section, click Visual C# , click SharePoint, and then click 2010. Click List Definition from the project items.In the Name box, type Bugs and then click OK. In the SharePoint Customization Wizard, type the local Web site that you want to use for this exercise (such as http://localhost/SampleWebSite). For the trust level, select Deploy as a farm solution and then click Next.o add an item to the Bugs list. Open the website that you specified previously. On the Home page, click the Bugs list in the left navigation pane. On the List Tools tab, click Items, and then click Bug Item on the New Item drop-down list as shown in Figure 4.