Paste the entire key into one of the boxes while still running in Large Font.
The installer will pares it out as necessary. This is a known solution becase
the problem is a known "issue" exactly as you describe it.

"Howard" wrote:

- quote -

In microsoft.public.money, Howard wrote:

- quote -

The other way is to copy the entire key (dashes included) and Paste
it into one of the fields (any of them) in the Activation dialog.

Well, I just spent an hour discovering that the Money Plus (2008)
activation key can not be entered on a system running XP with large
fonts. The problem is that the activation key entry window does not
scale with large fonts operational, and only four of the five digits
in most parts of the key can be entered. To get the product
activated, it is necessary to turn off the large fonts, reboot, enter
the activation key, turn on the large fonts, and reboot again. So much
for Microsoft's commitment to the sight impaired.

-- Howard