Canon "compatible" printer cartridges--can I use or did I get abused?

:eek:Bought G&G (made in China) compatible Canon BCI-6 cartridges. Says on cartridge box-" no chip". I am afraid I have

screwed up. Overstock.com (seller) claims these cartridges are compatible with the canon i9900 printer but I have to

know whether the cartridges must have a "chip". If the i9900 must have cartridges with chips then Overstock.com

has hosed me off. I have many pictures to print and I use expensive canon photo paper-can I use these cartridges or

not? Thanks in advance. (using w-xp on desktop pc).