how to read outlook inbox mails using c# windows service

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C#

C#4.0

in windows forms i am able to read outlook mails using office interop dlls

Outlook._Application olApp = new Outlook.Application();
Outlook._NameSpace olNs;
Outlook.MAPIFolder oSents;
olNs = olApp.GetNamespace("MAPI");
oSents = olNs.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox);
Outlook.Items oItems;
oItems = oSents .Items;
DateTime RDateTime;

for (int count = oItems.Count; count >= 1; count--)
                {
                    try
                    {
                        Microsoft.Office.Interop.Outlook._MailItem oMICopy = oItems[count] as Microsoft.Office.Interop.Outlook._MailItem;
                        oMICopy = (Outlook._MailItem)oItems[count];
                        RDateTime = oMICopy.ReceivedTime;
                        subject = oMICopy.Subject;
                        string MailBody = oMICopy.HTMLBody;
}

But in c# windows services i am unable to connect to outlook with local system accout.

please help me...