google url builder, cookies and forms

Hi,

google adwords allows the creation of url strings
e.g. http://thedivorcecompany.ca/?utm_source=google&utm_medium=display&utm_content=120x160&utm_campaign=Normal

Wordpress ignores the url strings.

I would like to capture the url string when people get to the page (I assume a cookie).

I would like Gravity to allow me to populate a hidden field witht he value of a cookie.

In poking around, I'm reasonably sure this is possible. The problem -- it may not be possible for me and my abilities.

Working on the idea that I can 'plant' a cookie, can anyone help me with a real simple way to access the cookie and place its contents in a hidden gravity field.

As much as I once wrote code (they had just got rid of the card readers in the lab....), this is now over my head. I'd appreciate a reply based on KISS (keeping is simple for the stupid...:))

I'm thinking this is something that a lot of folks could use.

Cheers
Dean

thanks for the reply.
I think the issue is that google adwords sends them to the landing page. They wander around for a while, and ultimately fill out the contact us page. I believe by that time the parameters are gone.

the only way I can think to persist the values is a cookie. However, when one possesses only a hammer, everything looks like a nail. A cookie may not be the best mechanism.

If we did the 'read a cookie' and stick it in a form field - where would the code go?

again, thanks for the help.
dean