readonly fileupload component

[Ravi Gidwani]

Hi all:
        I have FileUpload component on a page. What i want to do is to make the text field of this FileUpload component read-Only so that the user cant type in the any garbage values, but should be allowed to select a file only using the browse button.

    but when i make this component readonly buy making the 'readonly' attribute 'true', the browse button is disabled :(

I am using the Nightly build from 10-Jan-2006.

Any help would be really appreciated

~Ravi