How can i /tools/pma protect

[ispcp]

Hi Guys

Could you tell me how can I to protect this path /tools/pma for another "Netuser" ?

Right now can everybody put http://myip/tools/pma on his Browser and can see a phpmyadmin Login site. And I ,because a one of my Phpmyadmin Logins is root, want something more to protect this.

I tried with .htacces but it doesn't work (I put this files on ..gui/tools/pma and nothings happened, .htaccess must working, another files are protected)

Or should I change a root user to another one (Is it possible anyway??)

I hope you can understand my bad english
I hope too for your help and any tipps.

Thanks for any answer