[Excel, C#2005] Getting Cell From CellName

[Quasar6]

I'm using the Excel Interop to input a number of strings into cells. The cells can change depending on the excel "template" I open.

The cell names are constant however: the template file will always have a number of input cells with specific names.

What I need to do (In Visual C#, 2005) is get the specific cell in the worksheet from a name I specify in the code, and change it's value.

So far I have the following set up:

Excel.Application oXLApp = new Excel.Application();
            oXLApp.Visible = true;
            Excel.Workbook oXLBook = oXLApp.Workbooks.Open(
              Application.StartupPath + "\\Template1.xls", 
              openFileDialog1.FileName, 0, true, 5,
              "", "", true, Excel.XlPlatform.xlWindows, "\t", false, false,
              0, true);
            Excel.Worksheet oSht = (Excel.Worksheet)oXLBook.Worksheets.get_Item(1);

From there I'm not sure where to go. Any help would be appreciated.
Qu.