Do a windows search for *.xlb, make sure you change the default search so it
looks at hidden folders and files. Then move it to you new computer

Saved from a previous post:

I have a short list of things to copy/update when we changed pc's at work.

It's not complete, but may help you.

Word/Excel files:

FileName     Use
custom.dic   personal dictionary
*.acl        personal autocorrect list
mssp2_en.exc personal exclusion dictionary
normal.dot   default (for new documents) template
*.dot        Any other templates you've made

*.xlb        personal toolbar
book.xlt     defaults for new workbooks
sheet.xlt    defaults for new worksheets
personal.xl* personal macros
*.xlt        Any other templates you've made

And don't forget any:
Local files  (If you don’t store on LAN)
(Settings)   Directories and other defaults (Tools|Options stuff)

====
I've found the easiest way to find these files is to use Windows start
button|Search.

Remember to look through hidden folders/files.  And if I find multiple files of
the same name, I open excel (say), then make a minor change to that file.  Then
search again.  Then I can pick out the current version of the file.

That said, if you're upgrading from an older version of office, I wouldn't copy
the toolbar.  (I would take good notes to help me rebuild this toolbar (maybe
even fix it up a bit).)

Same with the normal.dot (I'd let MSWord rebuild that--then just copy|paste any
macros into it manually.)

The *.xlt (book.xlt, sheet.xlt), I'd copy over, but then open and resave them
using the newer version.