When ever i go to add or view things in the clubsite event calendar i get the following:

System.InvalidCastException was unhandled by user code
  Message="Unable to cast object of type 'System.DBNull' to type 'System.String'."
  Source="App_Web_fkz-yrfu"
  StackTrace:
       at ASP.events_list_aspx.__DataBinding__control15(Object sender, EventArgs e) in h:\LANCERS\ClubWebSite1\Events_List.aspx:line 130
       at System.Web.UI.Control.OnDataBinding(EventArgs e)
       at System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding)
       at System.Web.UI.Control.DataBind()
       at System.Web.UI.Control.DataBindChildren()
  InnerException:

Could someone offer me a hand with this.  i really don't know what's going on.

 Looks like you are retrieving  a value from the database that happens to be null and are trying to cast it to string. See line 130 in your code / post the code so that we can take a look at it