Paul
I suspect that something has been lost in translation here.
1) What does your "reader writer" read and write - CDs, DVDs, magnetic tape, USB flash drives, the hard drive? A make and model might even be helpful.
2) "Embroidery software" is probably a mis-translation, unless you are doing needlepoint with your computer (
http://en.wikipedia.org/wiki/Needlepoint ). To distinguish between the virtues of version 5 and 6, we need to know version 5 and 6 of what? Is this driver software from the manufacturer of the reader writer? Some program?
Also, since you lost connection since XP was installed, what was installed before? Did this computer used to run some other operating system like Windows 2000, or is it a new one that simply hasn't worked since the operating system was installed?