Headset help

Morever

Hi, all going well I'm hopefully buying a 2011 Camber Expert 26 frame as I make the move from hardtail riding to my first ever FS. My HT has a standard 1 1/8th steerer and headtube, whereas the Camber has tapered headtube. Although I hope to get a tapered fork (I'm making do with 100mm from HT on the Camber for the time being) in the future I need some advice on compatibility. Can I buy a shim for the lower 1.5 lower headset section to make it fit my 1 1/8 steerer or do I need to buy a whole new headset with a extra wide bit on the bottom? Any advice would be great cheers
Ben

supersonic

New lower cup is required.

Morever

ok so there's no need for a complete headset then, just ask LBS for lower cup only?