What product are you using?
With most the keywords are stored on the image. If you want to transfer the keyword list choose Export and save file on thumb drive.
Collections are just addresses of where the pictures are, so do not think you can transfer them.
I’ve just upgraded to CS6
On XP Bridge stores your collections in
c:\Documents and Settings\user\Application Data\Adobe\Bridge CS6\Collections\
Thanks for the reply. Any idea where it is stored on a Windows 7 machine
c:\Documents and Settings\user\Application Data
That worked thank you very much