SOLUTION:
If you have tried to install
MySQL 5.1.34 without success the first time, follow these steps...
1. Stop the Service (if it has been started!)
2. Unistall MySQL (from add/remove)
3. Go to C:\Program Files\MySQL\ (folder) and
DELETE the folder MySQL Server 5.1
4. Go to C:\ProgramData\MySQL\ (folder) and
DELETE everything in there!!!
5. Start a new installation of MySQL 5.1.34
6. Done!
Hope it helps...
