You can buy canned compressed air at any office depot or staples, or any computer store for that matter. I guess they'd have it at Walmart and probably Target too.

However, one of the other posters had a great idea, use a hair dryer with the heat turned off (if that can be done, which I don't know).

I still can't believe no one blared this out on any of the websites I frequent. I even carefully make rescue disks and backups and all that stuff. It's not fun. Take care!