Hi!

Start Konsole and mount the windows partition in it:
Alt+F2 -> konsole

mount /mnt/hda1

That should show all of the files in /dev/hda1 in directory /mnt/hda1. If not, there is some problems accessing the device.

You can also check, if the partition is mounted by looking at /etc/mtab:

cat /etc/mtab

That should show your windows partition in the list now.

Then, start k3b, add your files and burn it.

If you have access to a Linux or Windows vfat partition, you could make an ISO image of the files before burning. That is recommended.

Eleknader