VS Error List Warnings 1.60

VS2008 pro is showing nopCommerce 1.60 has 6 warnings.  Are these anything I should concerened about?

1.File~SimpleTextBox.ascx.cs
'NopSolutions.NopCommerce.Web.Modules.SimpleTextBox.Skinid' hides inherited member 'System.Web.UI.Control.SkinID'. To Make the current member override that implementation, add the overridde keyword.  Otherwise add the new keyword.

2.File~ACL.ascx.cs
Unreachable code detected

3.File~ShippingMethodsFilterControl.ascx.cs
Unreachable code detected

4.File~Search.ascx.cs
The Variable 'exe' is declared but never used (line 96)

5.File~Search.ascx.cs
The Variable 'exe' is declared but never used (line 114)

6.File~install.ascx.cs
Unreachable code detected

Chad

That's OK. Just warnings (not errors)

Thank you.

Chad