Windows 7 deployment using SCCM 2007 SP2

Hi,

We planning to do Windows 7 deployment using SCCM 2007 SP2 so we have some queries regarding same.

1.       Is it possible to take entire HDD backup & restore using SCCM 2007 SP2? Also is it recommended to do so?
2.       What will be the effective method to deploy OS at remote branches?
3.       If we want to save the network bandwidth then what will way to send image to distribution point and client as well.
4.       Is it mandatory to have PXE boot enable in bios & set as first boot preference on each client machine for PXE initiated windows 7 deployment? If so then is there any option to enable PXE boot & set as first preference on client machineremotely?
5.       Is it possible to deploy OS in other than C drive i.e D or E to have dual boot option?
6.       Which we will be best method to have zero touch deployment without any end user intervention and why?

Please help to clarify.