How do I print comp slips on an HP officejet v45? -

It seems that the with compliments slips would have to go right into the machine-or am I missing something?

I have an Hp machine and yes the slips go right into the paper feed. I think there is some way of doing them length ways but I haven t got that sussed!! When I print mine they are done layed out as for normal A4 printing, just all at the top of the page. Maybe I am the one missing something!!?