Migrating Firefox Profile from one computer to another

Recently, I had to get a new laptop at work since the lease on my old laptop had expired and it was acting weird. I transferred the data swiftly using this cord. But Firefox was a big deal since I stored a lot of bookmarks and passwords for some sites on the Firefox. First I tried copying the profiles folder directly but it didn't work and Firefox was giving me the message "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system." Here is how I got it working.

Lets say you want to transfer bookmarks, history, passwords from Computer A to Computer B. Firefox calls it profiles.

On Computer B, install firefox. Go to Windows Run, and type firefox -P. In the next screen click Create New profile, and give a name of your choice. Now go to (C or D drvive):\Documents and Settings\(your user id)\Application Data\Mozilla\Firefox\Profiles. Identify the profile you just created. You need to be able to see hidden folders to see this folder.

On Computer A go to the same location and the contents of your profile to a Flash drive and copy the contents. On Computer B, replace the contents of the profile folder you just created with the contents from the flash drive. Do this when Firefox is closed and you checked in Task Manager that its not running. That's all there is to it. Open firefox on Computer B and its exactly the same as Computer A with bookmarks, passwords and Master password too.