Do you want to AutoPlay Sansa when you plug it into your Windows computer?  You can turn that on if you wish, or specify what you'd like your computer to do.

Here is how.

1) Plug in your Sansa.

2) Press the [Windows Key] + E, or go to My Computer.  The Sansa will show up.

3) Right Click on your Sansa, and select Properties.  Then select the AutoPlay tab, there you go!