NTFS --> FAT32 partition

I have installed Linux on a disk wich has an NTFS partition (XP file system). I want to convert (not format) it to FAT32 in order to allow Linux to read on it.
But Partition Magic pro can't do it because there is sparse or compressed files on my partition (I think it is a sparse file in relation with the XP registry).

Do you know how I could solve this problem? Maybe with another program, maybe manipulating the file (but I have only a number to name it)...

You could always recompile your Linux kernel to see the NTFS partition. It's a little bit involved and you do run the risk of making your linux unbootable.

Use google, it is your friend.....