Adobe InDesign Help

Okay.

Please help me!

I have made a little hand-out in Adobe InDesign. It is A5, and I am printing on A4 paper.

I have set printing so that it SHOULD print as 1 next to the other

eg

|-----------|-----------|
|...............|................|
|...............|................|
|...............|................|
|...............|................|
|-----------|-----------|

if you get what I mean?

But when I click print, it prints as just one
eg

|-----------|
|...............|
|...............|
|...............|
|...............|
|-----------|

But it has a big border around it, and obviously isn't what I need.

Does anyone know how I can get the document to print 2 on the sheet?

Sorry if I seem vauge =[

(+3 rep to helpers)