Okay, since you use lilo as bootloader, what you need to do is this:
1) Edit your /etc/lilo.conf. Find line that says: default="Linux- XXXX"
Change that to , default= "Whatever you windows is labeled"
2) You can change your time out if you want to.
3) Save the edited lilo.conf.
4) Open konsole as root, and run : lilo so lilo will be updated.

You can also arrange your lilo menu, so that windows menu will be on top of linux by cut and paste and put it above others.