|I'll try to create the variables in registry manually|
This is not how you cam add or change Environment Variables in Vista. Here is the correct way to do it (you may need to elevate your UAC)
1. Open Run Box (ÿ+R key).
2. Type in the command line
3. Click on Continue when UAC pops up. THis will open System Properties dialog box.
4. Press Environment Variables button located on the bottom of the System Properties dialog box.
There you go. Remember this - any change you add or delete from the environment variable is not per user - it is applied system (machine)-wide.