Change the sequence of custom search sidebox?

Hi

I'd like some feedback to see if what i want to do is possible (given that I'd only be able to copy and paste!)

my store is at store.mmw.ie

The custom search sidebox looks for "product" input first and i would like to change this to "vehicle make".

I know I'll have to clone the sidebox but do i need to clone the individual php files that make up the "engine" as I just want to change the order that the search is carried out?

for example the last part of the search is "get_exact_model.php", If i want this changed to "get_make.php" can I just search in the code and replace these file names to the order i want?
Apologies i've confused you, my knowledge of coding is nill. I can post the contents of any individual files if anyone thinks it would help

Thanks
Iddy

Just finished looking into this and it's way beyond my capabilities :dontgetit

I'll have to find someone who's familiar with php to take a look for me.

Id