Those shifters are for flat bars, like a ATB. You canb use them, I suspose, but you'll also need a frame mounted cable stop and some SIS cable housing. You might be better off with these levers:
http://www.biketoolsetc.com/index.cg...m_id=SU-137A/6
The rest of the gear will all work together. The only thing you might have trouble with is getting the old freewheel off. If you don't have a freewheel tool that fits you can either have your LBS remove it for a few bucks or do this:
http://sheldonbrown.com/freewheels.html#remove
scroll down to destructive removal.
When you have everything hooked up go to:
http://www.parktool.com/repair/byreg...mageField2.y=9
and follow the instructions for RD and shifter installation and adjustment.
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