What's your zoom level set for?

When you zoom to 100% does it look like it's using the font that you specified?

If yes, then maybe this post by Debra Dalgleish will help:

You can change a registry setting to prevent this from happening (make a
backup copy of the registry first):

1. From the Start button, choose Run
2. Type regedit then click OK
3. Click the + sign to the left of HKEY_CURRENT_USER
4. Open Software, Microsoft, Office, 9.0, Excel, Options
5. Choose EditNewDWORD Value
6. Type the name for the DWORD: FontSub
7. Press Enter to complete the renaming
8. Choose EditModify
9. Type 0 as the value, select Decimal, and click OK
10. Close the Registry Editor

dewey wrote:

Hi There,
I know this seems completely basic, but I cannot change the font from Arial
in Excel. I have tried using every toolbar and menu known to man, but
nothing works. What is weird though, is that I can select a cell, for
example, and choose a different font (Times New Roman) and Excel tells me the
font has been changed, but appearance-wise it is still Arial. And, just for
the sake of life and the world in general, how about a campaign against
sans-serif fonts?
Thanks

--

Dave Peterson