Cannot decert C500 HELP!

[Guest stretchie]

Hello. I'm having a problem unlocking my old C500.

I HAVE read the threads and downloaded the service pack, HOWEVER I cannot run the .CAB file on the phone as 'it does not have the adequate system permissions'

I have tried the app unlock from the orange developer site but I never receive the message saying the device is unlocked....

Any idea's? I could really do with unlocking the phone as I want to use it for work. Which is a Vodaphone SIM

PLEASE HELP

Stretchie

[Guest stretchie]

No problem, I have done it now, ta