Simple PHP Script Needed

I need a simple php script written. I need a search box first of all. I would like it to be one of those bigger web 2.0 looking boxes, with the bigger text and submit button.

Now, when a user types a keyword into the box the keyword replaces a predefined spot in a url. So, a user types chicken into the search box. The keyword, in this case "chicken", is placed into a specified link.

e.g. www.yourdomain.com/000000 becomes www.yourdomain.com/chicken and sends the user to the new address.

I will need to be able to change the initial specified url at my discretion.

Also, it should be easy to put multiple search boxes on one page.

If I need it, I will pay extra for installation.

Should be pretty easy...

Any takers? PM or post your prices please.

Thanks