Annoying Little MSN Popup

Every day when I log on to my computer at work, I get this happy peppy popup asking me if I want to setup my new MSN network account.
My answer is a resounding NO!
I am already on the company internet and email and I want to scream every time that damn thing pops up.
Can I go in and delete the entire MSN directory, or is that overkill that will screw up a hundred other programs?

I take it you mean MSN messenger - no need to delete the whole directory, just rename it.