Welcome to Apple Support Communities
Of course. First, call Apple to get replacement DVDs > http://support.apple.com/kb/HE57 Then, follow these steps:
1. Insert the Mac OS X Install DVD and hold the C key while your Mac is starting.
2. Choose your language and go to Utilities menu (on the menu bar) > Disk Utility.
3. Choose the hard drive at the top of the sidebar, go to Erase tab and erase the drive.
4. Close Disk Utility and reinstall Mac OS X.
5. After reinstalling Mac OS X, use the Applications disc to install the iLife applications and open > Software Update to install the latest version.
Make a backup of your data before erasing your hard drive or your will lose your files. If your Mac didn't come with Snow Leopard, you will go back to Leopard, so if you want to keep Snow Leopard, you have to get Mac OS X Snow Leopard in the Apple Online Store