How to implement autocomplete with rich textbox in infopath2007?

I've met 开发者_StackOverflow社区a problem, our user asked me to implement autocomplete with rich textbox in infopath2007, and i've googled a lot, but failed, can anyone help me about it?

I'd guess you will be out of luck with 2007. In 2010 you can use the SPServices and jQuery to achieve this - see article