Detailed, fullscreen screenshots of the issue, clearly indicating where information is missing.
Is your issue with the Web Service (Google Calendar looking up Exchange users' free/busy from the web) or with the SyncService (pulling free/busy from Google Calendar into Exchange)?
Email addresses of accounts for which free/busy information is not syncing.
The Registry key you created in your Windows registry editor when installing.
Your Exchange free/busy URL.
Did you follow the setup instructions at http://code.google.com/p/google-calendar-connectors/wiki/WebServiceGuide and http://code.google.com/p/google-calendar-connectors/wiki/SyncServiceGuide exactly?
Attach webservice.log, web.config, syncservice.log, and GoogleCalendarSyncService.exe.config.