Mobileme sync constantly pops up warning of expiration. How can I stop the popup on the desktop?

I had tried the mobileme on the iphone setup for a short duration. Now, since the latest update of ITUNES, a message constantly pops up on the desktop, above all other pages, and states the account has expired. How is that shut off?|||Contact Apple's customer service and explain what is going on. Are you sure that your MobileMe account hasn't legitimately expired between you "tried" it and now? I'm wondering if you actually signed up for MobileMe by mistake... check your credit card statements.|||In your programs, open mobileme, then click sign out. for some reason it had me signed in after the latest itunes update. It's just more joys of apple's malware called itunes.|||try to uninstall it or go to the task manager and end the process that might make it go away