Disable AutoRun on Windows XP

Why do we need to disable that functions? Will it cause much trouble to start opening files from CD\portable HDD\FlashDisk?

• Not Really, it will cause more trouble if we get infected by those virus infected the portable disk. Nowadays, a lot of that kinds of viruses, even they just cause a small problem but it is just ridiculous.
  

Ok Ok, how are we going to disable the autorun function?

Now let's we start.

1. Go to START | RUN | type GPEDIT.msc
2. There will be 2 directories, both is having SubDirectories called "Administrative Templates"
3. Expand each of them, highlight System and look for "Turn off AutoPlay"
4. Double click on that, tick on "Enabled", and select for "All Drives".
5. Repeat those steps at the other one.

That is all, but how if we already get infected by those autorun viruses?

Let's continue later, I have something to do now.