I created a csv text file using FSO and loaded comma delimeter records from the db. After that I opened csv file using exel. Than insert a column and appended some more data. The problem is it's not saving the newly added data. When I open the csv file, it's opening in READ-ONLY mode. Why? After I insert a column and data how do I store it? Thanks in advance.

Are you saying that your csv file has Read-Only attribute? If so, you can remove it using API's, like SetFileAttributes

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Are you by any chance using Win2000?
Sometimes it seems to keep hold of a file even after you have closed it in your code (But didn't close the application itself)

I had this problem when writing temporary MIDI files - in WIN2000, I could not just overwrite the previous version.
It works OK in other WIN versions.