first of all, forget the MS-DOS drive letters! It will tell you nothing abut how you HD-layout relay looks. Learn to think in the Linux deice names. I name the drives in Windows with this names. Because
c:\ can move to be d:\ or something else. The Linux-names do never change until you change the
Now I will guess how you HD looks:
/dev/sda1 NTFS c:\
/dev/sda2 NTFS d:\ Windowz XP
/dev/sda3 NTFS e:\
It id looks like this you can only use /dev/sda3 to install Linux. Because if you delete /dev/sda1 Window$ will never ever start again. You would need to install it again.
If there is enough space on /dev/sda3 you can delete it. You will need min. 15GB. You would need to crate a /dev/sda3 ext3 partition with the size of min 14 GB. Mount in as / . Then you will need a swap partition. /dev/sda4 swap min. the size of your RAM. Max. the size of 1GB.
You HD would look like:
/dev/sda3 ext3 /
/dev/sda4 swap swap
The installer on any Fedora-CD will offer you to install a "costum layout". Choose this option. Then you will be able to do all in confabel grafic mode.