Help!

[Joelf]

hi guys wanna clear some doubts about iu and insurance, firstly i'm going to have my spoilt IU replaced for a 2nd hand one at motortiam. besides juz replacing the iu, do i need to sign any documents? coz from wat i know, iu is registered to a particular vehicle. and also about insurance. for eg. im going for inspection in jun. and i have to renew my insurance at the same time together with road tax right? den i was wondering. if lets say i renew my insurance den about 1 or 2 months later i upgrade to class 2a bike. do i need to buy insurance again for the 2a bike? or can the insurance tat i renewed for the 2b bike b "upgraded" suit 2a bike? any help will b v much appreciated. hopefully can ans all my questions. thanks.

[Joelf]

Oh yah. forgot one more thing. wats the procedure to renew insurance and i can buy from another company other den my previous one right? thinking of AXA. and also wanna know where to buy axa insurance. im really a noob. pls help. thanks