How To Rename A Spreadsheet And Save The Worbook To A Specific File Location

I have created and opened a new Excel spreadsheet using COM in Visual Studio 2010 C++.  How can I rename a sheet in the workbook and how can I save the workbook to a specific location?  I made this worth 500 because I put 2 questions in here but I'm pretty sure they are easy answers.  I just don't know the correct method to use or where to look to find a list of methods available through COM for Excel.

XL.CreateInstance(L"Excel.Application");
XL->Visible = true;
XL->Workbooks->Add();
Excel::_WorkbookPtr p_workbook=XL->ActiveWorkbook;
Excel::_WorksheetPtr pSheet = p_workbook->ActiveSheet;

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