To use sync function in Mobile 6, need to active the network function from [Start] \ [Settings] \ [Connection] \ [USB Settings] of the Mobile 6. Due to different Mobile 6 may use different wording, please find the similar wording from yours.
Click File\Sync from WorldCard menu to begin sync. WorldCard will send a sync program to your Mobile 6, please accept it in your Mobile 6. After you see Finish in Sync Wizard, you can find new information from both WolrdCard and Mobile 6.
Please note that the firewall in the PC may block the communication, please add WorldCard.exe in the Unblock list.