Struts with spring 1.2

[Rodolfo GarcĂ­a Esteban/CYII]

Hi,

I´m testing spring framework and it uses struts 1.1, is it posible upgrade 
to struts 1.2.7 changing struts.jar, what new posibilities of struts 1.2.7 
will not be possible to use?

Thanks

Rodolfo