2nd theme (not template) for some pages

We have a blog with a few template pages and it works great. Nu we have a special event and for this we created a new page in Wordress. The layout must be totally something else then the theme from my blog. So header, footer, css and so on, with other words: I WANT A 2ND THEME FOR SOME PAGES.
I’m and experienced WP user but this question I can’t find online and in the blogs / forums.
Is is posible to create a themplate file and tell this one to search for another theme?

Jonas