How do I stop HyperLink control encoding the NavigationUrl?

Hi there,
If I set a HyperLink control's NavigateUrl property to 'mypage.aspx?id=1&p=2' then it outputs something like...  'mypage.aspx?id=1&p=2' which unsurprisingly freaks out some browsers and the 'p' variable gets lost.
Is there a way to not encode the output? (If not then that's fairly high on the ridiculous scale!)
Cheers, WT.
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