As GameGURU says, delete all linux partitions and reinstall Fedora Core 3. Use ext3 file system for your linux partitions.
If you are using NTFS file system for XP you need to download the following file to allow NTFS access from fedora core. Note: You can access NTFS from linux, but writing to NTFS from linux is not very stable, it can corrupt data "big time".
open a command prompt and do the following
type: su
hit enter and type your root password
type: uname -rp
This will output your kernel version and processor type
Open up your browswer and go to
http://linux-ntfs.sourceforge.net/rpm/fedora3.html
and download (save to disk) the appropriate NTFS RPM for your kernel version and processor type. This should save the file to your home folder. If it saves the file to your desktop instead go to your desktop and drag the file into your "Home" folder. (Left mouse click on the file and drag it on top of your "Home" folder while holding the left mouse button down. Then release the mouse button.)
then
With the root terminal still open type: rpm -ivh *.rpm
Hit enter and wait for installation to complete. Type: rm *.rpm
Hit enter and type "y" and hit enter. Type: su -
Type: mkdir /mnt/windows
Hit enter, type: /sbin/fdisk -l
Hit enter. This will output your HPFS/NTFS partition identifier. Type: gedit /etc/fstab
Hit enter and gedit will open.
Type the following in gedit: /dev/hda1 /mnt/windows ntfs ro,defaults,umask=0222 0 0
If your partition identifier is not "/dev/hda1" substitute the correct characters. (For example it might be "/dev/sda1" if you have a SATA drive.) Click the "save" icon in gedit and exit gedit. Close the terminal. Reboot. Your Windows partition should now be available in the file browser under "/mnt/windows".
Hope that helps. Fedora Core can read and write from a fat32 partition automatically. Hope this helps.