Here's the help page at Microsoft. I haven't ever used Voice Command, so I probably won't be much help, but this seems like a pretty comprehensive Troubleshooting guide.
http://www.microsoft.com/windowsmobi...eshooting.mspx
Glad I could help! It was my pleasure! Sorry I can't do more about Voice Command.
If this page doesn't help, check back here tomorrow. Sometimes it takes a while for people to see a post and respond.
See you around!
oh, and by the way...
Welcome to PPCGeeks! 