One option - boot directly into DOS ...
Download an appropriate disk image from bootdisk.com (say msdos 6.22) run the program with a blank floppy in the drive to create the bootable disk.
Now restart the pc with the floppy in, it will boot into dos..... if your hard disk is formatted as FAT, you should be able to access that.
If it doesnt work, you will only have wasted a little time, no money
Graham