If you will be moving the same Profile to the same OS, then the above link isn't for you. This guideline provides steps for moving a Profile from one OS to another OS, i.e., Windows 98 to Windows XP.
Instead, follow this step by step guideline: Move the Same Profile To and From the Same Operating System
Save the entire Profiles folder located here, depending on your OS: Windows XP
C:\Documents and Settings\user_name\Application Data\Mozilla\Profiles Windows98
If you need additional help after the move, let us know...