Yep, I disk use a german program, you can find it on the Pooldisk CDROM. When you want to have it e-mail me. You need a 360Kb diskdrive, I don't know if it works with an 1.2Mb drive. You also need a 1050 or XF551 or other diskdrive that can read/write 180Kb disks. Just format the disk on Atari with MyDOS, TurboDOS or any other DOS 2.x compatible DOS. On the pc you can read/write files from the disk. I did use it alot.
There are also programs to read SpartaDOS but I never tested them. When you have a Happy 7.10 drive there is a utility to read IBM disks in that drive on Atari, no writing. When you have an XF551 you can read ST or IBM disks 5.25 or 3.5 when you use the CSS upgrade kit.
TXG