Does each link get it's own display text or do you just need a button that says 'Link to file'? The control source of your text box can be static text like 'Link to file' or it could be another field in your table, say something like a field called [DisplayText]. The text box has a display as hyperlink property you can use even if the actual text in the textbox isn't a hyperlink. Then on the OnClick event of the textbox the code would simply be
Code:
If Not IsNull(Me![HyperlinkField]) Then Application.FollowHyperlink Me![HyperlinkField]
or what ever the name of your field is.