Alienware- Warranty Renewal After expired.

Hi Guys,

just spoke to Dell, just brought an M18X R2 and the warranty has expired but i would like to renew it. The sales guy said that it can be done, however i would need to speak to technical support first as they need to do a hardware diagnostic over the phone ? has anybody had one of these before, do i need to have my laptop with me prior to ringing ? what exactly do they do a remote log on etc? i don't want to sound like a fool when i ring up, i wont be home until next week !

thanks :)