I am very rusty with DOS and I am attempting to upgrade my software version of DS. I have an older laptop that is loaded with nothing but DOS. I originally copied the DS software to the harddrive of my laptop like it recommends in the DS booklet. I now have the later version of DS on a floppy but how do I install that in place of the original version that I loaded on the computer. I tried going thru the same commands that I did to load the software originally but apparently that wont work. Thanks for the help.