You might want to try the "WebRecorder Addon". This example could help you also.... It shows how the text of the webpage can be parsed when read using the HTTPRequest> command.
[code]
Input>zip_code,Enter a zipcode to find out the current weather
Let>URL=
http://www.briansutton.com/wx/weather.h ... s&#current
HTTPRequest>URL,,GET,,HTMLResponse
Let>String1=
Let>String2=
Length>String1,String1_length
Position>String1,HTMLResponse,1,StartAt
Add>StartAt,String1_length
Position>String2,HTMLResponse,StartAt,EndAt,FALSE
Let>myLen=EndAt-StartAt
MidSTr>HTMLResponse,StartAt,myLen,myWeather
MessageModal>The current weather for zipcode %zip_code% is %CRLF%%CRLF%%myWeather%
[/code]