You're most likely using Grub if you chose defaults. I'm using SuSE 8.2 right now:
1. Go to YaST2 Control Center
2. Click "System" on the left
3. Click "Boot Loader Configuration" on the right.
4. Click "Available Sections" under the "Option" column, then click the button "Edit" at the bottom
5. Click "Windows" (or whatever you named your Windows partition) under the "Label" column, then click the button "Set as Default"
6. OK
7. Finish
That should be it. Beware, though. Automatically booting up in Windows means you might not make the effort to learn to work in a Linux environment. I've been there. Now I'm happily running Slackware/Dropline on my laptop (which will soon be replaced by Mandrake for the hell of it) and SuSE 8.2 on the desktop (which I'll replace with Slackware/Dropline because I love Dropline (
http://www.dropline.net/)).