how to add extra columns to a report that are not in select query or stored proc

Hi,

I am new to reporting.I have 10 columns coming from the sql query.I need to add 2 more columns to the same report.These 2 columns come from the values the user selected in the dropdownlist on a webpage(From where we are calling the Report).How to add these columns to the report from the webpage.Please guide me.

in the textbox use

=Parameters!parameterName.Value

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you create input parameters and supply the value when the rpt is launched from the web, then in the text box u place the i/p paramter inst of keeping the table field