>>Good suggestion. I have already done that but I thought the API call wold be faster/better.
>
>Security API calls tend to be really awkward. I'll look into it over the weekend to see if this one has an 'easy' fix.

The fix is not easy, because the API call to get this information (NetFileEnum) requires the use of pointers to retreive the information. For a start on how to do this, look at Paul's FAQ article here on getting open files for a user.