Getting the Norton Toolbar back onto Firefox from IE8

Hi. I had the Norton Toolbar on my Firefox v3.6.8 but FF was uninstalled (long story) on my Win7 64-bit machine. The Toolbar then went to IE8.

 

Now I am using Firefox Portable 3.6.8 and I can't seem to get the Norton Toolbar to work with FF because it's still on IE8 instead.   It works just fine with FF Portable 3.6.8 on my Vista 64-bit.  What do I need to know to make FFportable work with the Toolbar on the Windows 7 64-bit machine?  Thanks!