Quick image info

I've decided that I'd like to take an image of my sisters laptop for convenice and such. I have both Ghost and Acronis at home but have never used the Imaging part of the suite (only Disk Director) and was wondering if someone could outline some steps to create and image.

Her hard drive is 80GB in size and as such I'd like the image to be recoverable from a external hard disk

The current drive partitions are set like this:

C: Windows XP
D: Documents
E: Windows Vista

Any help would be greatly appreciated :)

There's actually a wizard in Acronis - follow that - very easy :)