If you open the table TempRevenueForecast in edit mode (right-click-table - edit top 200 rows) in SSMS, you can just copy-paste the excel data over.
That's a very handy feature of SSMS.
Otherwise, use OpenRowSet:
INSERT INTO [TempRevenueForecast ] ([Column1], [Column2], [Column3], [Column4])
SELECT A.[Column1], A.[Column2], A.[Column3], A.[Column4]
FROM OPENROWSET
('Microsoft.Jet.OLEDB.4.0', 'Excel 8.0;Database=E:\RevenueTracker\Demo\UserTemplate.xls;HDR=YES', 'select * from [Sheet1$]') AS A;
For that to work, the Microsoft Access Database Engine (ACE) components must be installed.
http://www.microsoft.com/en-us/download/details.aspx?id=23734
or
http://www.microsoft.com/en-us/download/details.aspx?id=13255