Generate Invoice in Excel sheet Sharepoint 2010

Avg Bid (USD)
Project Budget (USD)
$30 - $40

Project Description:
Its very easy job but have very tight time bound.
We have predefined Excel sheet Invoice format and we want to fill that format by inserting data into right cells which we will read from SharePoint Lists.
Excel file should get generated based on user button click event.

Additional Project Description:
05/15/2013 at 12:10 EET
We prefer coding in only

Skills required:
.NET, Sharepoint
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