Asp.net and Excel problem Urgent !!!

[SA]

hi all
i am facing a unique problem

I have a simple ASPx page with a label server control with text = "
Total Revenues in (£) "

on click of a button , i change the content type and export the output
to Excel

The following is the code

Response.ContentType = "application/vnd.ms-excel"
Response.AddHeader("Content-Disposition", "filename=" &
"test.xls;")
Response.Charset = ""
Response.end

When the page open in Excel the "£" sign is displayed as "£".
Can anyone help me out

Regards
SA