What's wrong? Plz Help

okay, i'm pretty good with programming, and I dont like asking for support on forums before I give it, but i know pretty much nothing about hardware and drivers
so i dont really know if I have a sound cardor anything
I have a windows xp
I used some speakers with this computer when I first got it, and they worked fine. Thats when my OS was Windows XP Home
I installed Windows XP Professional onto the computer because i had several viruses, and I noticed that I didnt delete Windows XP Home
So i deleted it from cmd
Now I only have the Windows XP Professional OS and sound doesnt work at all
When i check my driver list under sound it has "Sound Blaster 6 or AWE32 compatible (WDM)" and its enabled, but theres an error, Code 0
I've gone to windows update, but I dcouldnt get a driver update for it
I've googled for updates, which led me to this site, but that didnt work either
The CNET link is broken
I don't know whats wrong or what to do
PLZ HELP ME
Any information on whats wrong or what to do would be much appreciated
Thanks, GreyHeart :-D

s = scan.readLine();
double i = scan.nextDouble();
i = Double.parseDouble(s);think again of what this line is doing.
first, it reads one line from standard input and store it to variable s.
and then it tries to read a double value AFTER the line inputted (which would be non-existing at this point) and store it to variable i (I think there should be an exception thrown at this point already, no?)
Even if this line works semantically, the combination of this line and the third doesn't make sense. You already assigned a value to variable i, and before it's even read you continute to reassign value to it with
i = Double.parseDouble(s);

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