MP3 Hel!!!?

Okay, I'm trying to upload songs to my new MP3. My problem is I"m stuck on the part where the instructions say I have to plug in the device and Device Set up Wizard will walk me through the rest. It is not coming up. I checked device manager "My computer" and it shows it is installed. I uninstalled it hoping the device set up wizard would start but it won't so I can't upload my songs. Any ideas????