Hi bpaschal,

Ibm Viavoice Support Number

Unfortunately, ViaVoice version 10is not a compatible program with Windows 7. You may check for the compatibility details here.
IBM ViaVoice TTS Runtime - US English 6.742: IBM ViaVoice TTS Runtime - US English. Overview IBM ViaVoice TTS Runtime - US English is a Shareware software in the category Miscellaneous. The WebSphere Voice software family ranges from transcription and voice response technology to message center services.

However, if the program worked with Windows XP, you may try installing the same using Windows XP compatibility mode in Windows 7 and check if that does the trick:
To install the program in Windows XP compatibility mode,
1. Right click the installation file and select Properties.
2. Click the Compatibility tab.
3. Under Compatibility mode, check the Run this program in compatibility mode for: option.
4. Select either WindowsXP (Service Pack 2) or Windows XP (Service Pack 3) from the available options.
5. Click Apply and OK.
Acapela Tts Voices For Windows
Refer the link below for more information on compatibility mode:
Make older programs run in this version of Windows
You may contact IBM support for further assistance:
IBM Support & downloads
Hope this information helps.