Transfer info from computer To USB

Mozilla Thunderbird Version 1.5.0.10 on my computer but I need to transfer all the info to my 4 gig thumb drive. That has Portable Thunderbird version 1.5.0.10 The folders are in different places. So I'm a little lost about passing the the information from one to the other. Can someone explain to me how to transfer the information step to step.

Thank You In Advance
William

I found the answer @ https://portableapps.com/support/thunderbird_portable#local_profile

Thank You All
William