HELP testing a kernel from a different rom

I would like to test kernel from UK Blade A430 SD card upgrading instruction & software package(Micro-P)-275342B0237DIS_EUR_QB18S_P632A10V1.0.2 on my Italian TIM branded ZTE Blade A430 to chech out if at least the kernel from the UK rom is ok on my phone.

I see that the update.zip has a boot.img in it but I was unable to boot that directly ... maybe I need to extract the kernel from it: how do I go about that ?

ATB
David