Install MYSQL in Windows Vista

Part A

1. First of all, uninstall all the mysql related products from your ADD/REMOVE Software.
 Control Panel -> ADD/Remove Software.
2. Secondly remove mysql related entries from your registry.
 type regedit 
3. then remove all mysql related entries from services.
4. Stop mysql service if present and if running
 Go to control panel -> Administrative tools -> Services
5. Check Whether MYSQL if Present is running or Stopped. If it is running Stop it.

Part B

To install MySQL Server 5.0.51a in Vista

1. Use mysql-essential-5.0.51a-win32.msi
2. Download and run Resource Hacker http://www.angusj.com/resourcehacker/
3. Open ...\MySQL Server 5.0\bin\MySQLInstanceConfig.exe with Resource Hacker
4. Navigate to 24\1\1033
5. Delete all text in the window
6. Press "Compile script"
7. Exit Resource Hacker and save the result (overwrite the initial MySQLInstanceConfig.exe)
8. Now MySQLInstanceConfig.exe should start normally.