[Scribus] imposing

[Welly]

Hi all!

New to the list, I'm currently running indesign under windows xp (boo! Hiss!
I hear you shout!), but I am planning on migrating over to Linux over the
next couple of weeks and a DTP program is essential for my work - I produce
a bi-monthly extreme sports publication. I understand that Scribus will
output PDF files, which is great. However when I send PDF files to the
printers, they require the PDF file to be imposed, which I'm sure everyone
is familiar with. How is this done, if at all, in Scribus? If not within
Scribus, what alternatives are there?

Thanks!

Welly