Editing websites html pages

[Amitux]

Hi, I am developing a asp application for my client which reads their selected html page and values with in specified span tag is extracted and then i pass it to my rich text editor where one can format the span text after formatting i will pass the span original value, formatted text and file name(html page name eg-index.html) at action page i want to use file system object where i will first replace the values using three parameters it works fine but problem is if same span text is more than one time it will replace all the text when using replace function. can any one give their own idea.:confused: Thank You