watir/testcase in WATIR 3

[AQUA]

Hi All,

I have been working on WATIR 2.0.4 since last 6 months and now as
WATIR is updated to 3, I cant find watir/testcase in the commonwatir
folder. Seems as if watir/testcase has not been included in the latest
WATIR version. Can any one help me out of this.
And is their any way to by which I can use my existing gem libraries,
into some other system instead of installing it from them using "gem
install"



Thanks & Regards,

Manav Gupta
Bangalore