FAQ: SyncPro comes up every time I start eWallet. How do I stop it?
You can choose when SyncPro runs by going to Synchronize -> SyncPro Options (or Sync Manager -> Options) in the desktop eWallet. Choose whichever sync option works best for you.
(SyncPro actually doesn't synchronize if nothing's changed. It's just connecting with your Windows Mobile device to check if anything has changed.)