Google Calendar SMS Reminders?



I just switched from my iPhone 3G to a Samsung Galaxy S and I'm really pleased with the new phone and Android. But... on my iPhone I had an app called CalenGoo which sync'd with my Google Calendars (prior to the Exchange fix which Google created), Calengoo allowed me to create new events and when selecting the Reminder for the event I could select SMS as an option i.e. I would get a text message at a pre-determined time to remind me of an appointment coming up. How do I do this with Android? The Calender app supplied with the Samsung Galaxy doesn't appear to support it.