Splash doesn't work with Page Cache in Drupal 5

I have installed Splash Module in Drupal 5, It works fine when page cache is disabled. http://abc.com/home is the Home Page and http://abc.com/intro is the Splash flash page. When I type http://abc.com it takes to the /intro Page for the first time.

When I enable Page cache it always loads the Actual home page(/home) for anonymous Users. When I login it works fine.

We understand Splash uses cookies to enable this functionality. The reason why Splash doesn't work with Page cache is that, home pages gets loaded from page cache and the hook menu is not executed. Our site is a high traffic site. We need to use splash as well as page cache. The importance of Splash is that it will improve the google ranking of our home page.

Tried intercepting the process by writing code in hook_init, but it doen't resolve.

Any suggestions to handle the same.

In simple words we need to use cookie based rendering of pages from page cache.