problems with itunes

Hello.
I just received an ipod touch.
But Im having problems opening itunes, it keeps coming up with 'Could not access network location %APPDATA%\' icon
I have tried uninstalling it, reinstalling it, but it still didnt work.
I then, rebooted my computer, thinking i could just start from scratch.
It still didnt work.
So, I was wondering if you had any ideas on why its not working and how I could fix it.
Thank you.