My daughters have desribed a film they saw around 5 years ago. It is abount a mother and daughter living in a store over christmas in a tent... but they can't remember anymore than that. Any ideas?

The Greatest Store in the World (TV 1999) (http://www.imdb.com/title/tt0205983/)

Wow- this looks really promising, thank you so much... they are so desperate to watch this film again I will now look like "Super Mum" if I can get a copy for them.