Adobe Acrobat Links

[elpea]

Hi I'm going mad as it seems Acrobat won't do what I want when it comes to making links - I've set the 'appearance' tab to 'invisible' so there is no rectangle around the link, but a link keeps showing! AAArgh... is there any way around this? It should be simple, but it just won't do it. I wonder if there's a default setting I don't know about or something that's making this not possible?
Hope someone can help!