Hi Legendx,

a)    Do you recall making any changes to the computer before this happened?

b)    Does this happen with other programs as well?

I would suggest you to try the following steps:

1.    Open Fonts by clicking the Start button, clicking Control Panel, clicking Appearance and Personalization, and then clicking Fonts.

2.    See if you have Tahoma and verdana’ in there.

3.    Make sure that both Tahoma Regular and Tahoma Bold (also veranda regular\bold) are there.

Uninstall font

Select the fonts (which are causing problem) On the File menu, click Delete.

If you don’t see the File menu, press ALT.

Install or uninstall fonts

http://windows.microsoft.com/en-US/windows-vista/Install-or-uninstall-fonts

You may search online for fonts that you deleted, download and install them.

If the issue persists,

Step 2:  Run SFC (system file checker) scan

The system file checker (SFC) utility allows administrators to perform a scan of all protected resources to verify that they are the correct version. If SFC should find any incorrect versions in any of these protected resources, SFC will replace them with the correct versions.

You can always run a SFC scan on the windows vista computer. To run a SFC scan follow the steps below:

a)    Click on start and in the start search bar type cmd, right click on the command prompt icon in the programs area and then click on run as administrator.

b)    At the command prompt type sfc /scannow and then press enter.

For more information, see the link below

Troubleshoot font problems

http://windows.microsoft.com/en-us/windows-vista/Troubleshoot-font-problems

Thanks and Regards:

Ajay K

Microsoft Answers Support Engineer