Code Injection For Pixeling Sites

We have about 20 web sites and we would like to pixel all the pages on all those sites so we can let a third party server drop a cookie. Changing every page is not feasible. Even changing 1 page on every server would take months or years to complete. Here are a few details on our setup. - All the sites are on the same hosting supplier. - All the sites are either IIS or Apache. -We would like to do this with 1 or 2 changes. i.e. we want to make a change at the server layer or proxy layer - not at the page layer. ## Deliverables We need to work together to deliver final requirements before the work starts.