Restrict Output for Fax and Print in Sales Order

Hi,

I am having a sales order output with two output types - Fax and Print. I need to restrict one page "Terms & Conditions" to be printed only once when I select the output type as FAX. But if the output type is PRINT, I have to print the page "Terms & Conditions" after every page i.e in even numbers since it is getting printed on both sides of the paper.

Can anyone help me on this.

Thanks in Advance.