Can someone help me identify this bicycle? It says it is a Cannondale F400, but it seems those all have forks with suspension.  I am trying to figure out what it is, and it's value, before I move forward with looking at it, but I can't find anything that looks the same, and has the same features.

I can't post the images directly.  Thanks.

http://portland.craigslist.org/mlt/bik/4013428729.html
BikePedia has an entry about a bike that looks to be the same as what you posted.

It's a Cannondale Adventure 400 femenine model.  It appears that this came with a front shock initally, but may have been fitted with a rigid front fork (or there were alternate models without the shock).  

These appear to have been produced for several years, with a mostly similar design. I'm not quite sure what year that model is.