Voice Buddy problems

I've just installed Voice Buddy on my system, but its not working very well for me. It recognises my voice command OK and indicates it is carrying it out, but usually nothing happens. Sometimes it will carry out a few commands intermitently, but then goes on strike. The problem is common to all aircraft. I should have enough system resources to run it with a 2.4 GHz processor and 512 MB of RAM. All my keyboard commands are the default 2004 ones as shipped in the box. I'm kinda stuck for ideas on troubleshooting the problem. Are there any Voice Buddy experts out there?