RealVNC Connection problem

Hey, I just downloaded the newest version of RealVNC from their site yesterday. When logging in with root, everything works fine. But when I log into any other account I get an "access is denied" message. I have the program installed in "root" and when I installed it again under a different account, I got "username or password is incorrect"

What am I doing wrong? The other user accounts were created after I had already installed the VNC program. I'm running Solaris 10 on SunFire880.

Thanks