You can't, I own an XTI which is the same just a few more features but it's the same construction, If you take the lens out you can see the mirror is there that's why you can't record and can't use the lcd screen.
These are experienced user cameras pretty much and if you noticed photographers never use the LCD screen, they use the view finder to shoot.
When you look in the view finder you can see info in there and the focus points all line up and all.
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