You're best off changing the handbrake calipers. It's not worth the hassle to try and un-sieze them. Trust me, I know - I had one replaced at the beginning of March and the other side done last week.
As for the H/B cables, I'm not sure if you have manual or auto adjust, but you should be able to get the part from a local motor parts store, just give them your reg no and they SHOULD give you the correct part auto/manual adjust.
HTH
Lee :L
As for the H/B cables, I'm not sure if you have manual or auto adjust, but you should be able to get the part from a local motor parts store, just give them your reg no and they SHOULD give you the correct part auto/manual adjust.
HTH
Lee :L