How to get back
There are a few ways to get back to mac. You can go down to the system tray if you installed the bootcamp utilities and on the little gray diamond, right click and say boot into mac os x. Otherwise, reboot the computer and right when it starts up (I usually do it right before or right at the startup noise) hold down "d" or "alt/option" on the keyboard. Keep it help down and it will bring up a screen with your bootable drives(including usb drives) displayed. You can then use the arrow keys to select the drive you want to boot to, mac or windows, and then hit enter to actually boot. Another cool trick is that if you hold down "c" you will boot to the CD in the drive.
Try that out and let us know how it goes. 😀