Yes, it can be done. You'll need to change themes to a "Today" theme. This will change the overall look and feel of your phone. Check out the Tour 9630 theme section on Crackberry.com here . Specifically look for a theme type that says Today. This will have your calender and message items display directly on your home screen.
If you need help learning how to install themes you can read this article: Blackberry Themes 101
Is it possible to set up the calendar so that it shows me upcoming events on the home screen or background? I came from an i760 and it did this, it's the only thing I miss...
I have designed a few Today style themes for the Tour which feature up to 6 message or calendar previews from the home screen. If anyone wants to have a copy for free just send me a private message. I created a few of the Today themes because I like them and there weren't that many out there I liked. Send me a PM here and I will get with you about emailing you a copy.