BRL, I also have the Canon Ixus 400, and I think its one of the best gadgets around. As far as developing goes I've been using this lot
www.colormailer.com for about 2 years and they really are excellent. Cheaper than the chemist (in Switzerland, I couldnt say about elsewhere), and they nearly always come within 2 days, and have regular promotions that make the prints even cheaper.