Shoutbox

You could use Fineprint or similar print-managing programs for this. You can print two or more pages on one side and doublesided printing etc...
The downside is, it will print a little line on each paper saying "This documet was printed with Fineprint" as long as you don't register.

(Btw, I'm sure that the option to print just even or just odd pages can be found the properties of nearly every printer)