How to integrate two rails project

I have a existing rails project, and i need integrate(plug) into a new
rails project, how?

thanks

What do you mean by integrate ? Without extra details this is a how
long is a piece of string question.

Fred

i want to use Yahoobb pack http://github.com/xdite/yahoobb-pack/tree/master
as a lib and integrate into a new rails project created by me, but
this Yahoobb pack is a rails project, how to do? thanks...

sorry for my poor english

Just start with that project instead of creating your own. Then edit
and modify to suit your needs. It's just a way for you to start out
with some pre-written code.

Jeff