Search bar on more than one page

I have a search bar that is going to be in my header. Let's say it's going to be on about 7 pages. I see this all the time, and I could do it manually but I don't feel like doing all of the code work. I know this has to be possible with dataassist search wizard.

Last night, I was on my index.php page (where my search form name/id is searchme). I did the dataassist search wizard, but it wouldn't let me choose that form. I then had to choose a page that I was going to use..so I chose search.php.

Finally, once finished, I ended up with another form on search.php, but a lot of code on the index.php. It apparently doesn't work lol

What is the easiest way to put this search on the different pages that I need...and use one results page.

Thanks!