I've got a really simple drawing which is a group of shapes. It's available here: http://www.mediafire.com/?tonkzqdmwgt
I'm fairly new to Inkscape and I can't find how to achieve this: I'd like to bend this group of shapes, a bit like you would bend a sheet of paper. I need nothing too complicated, just something that would take a curved form, say, like a banana.
I tried the

Do you know how to achieve this?
Thanks a lot for your help.
Julien