Repositioning shifters

Alibran Posts: 370
edited November 2010 in Road beginners
My partner fell off her bike today (she's not badly hurt, and neither is the bike!), and the shifters on one side have twisted round so they're pointing inwards. They won't force back into the correct place - or at least I'm not strong enough to force them - so I assume we need to take them off and put them back on again.

Can anyone tell me how to do that?

It's a Shimano triple, the one with the little thumb lever to change onto the smaller rings. I can't remember what it's called. It's one step down from Tiagra.

There's a small screw on the back, so I'm thinking if I undo that I'll be able to get into the workings of it and probably take it off from there. Is that correct?