Replying to ITunes help. +k

I updated to the newest version of iTunes a couples days ago and hadn't synced my iPod to it yet. I just bought my friends first gen touch and plugged it in to my laptop, itunes was running and then closed by itself. Now when I click it an hourglass shows up for about 2-3 seconds and then nothing. I've tried reinstalling, restarting my computer, checking for viruses... I plugged the iPod in to my home pc and it worked fine. Does anybody know what to do?