java 6 - Edgy

[John Dangler]

I'm trying to install Sun Enterprise Studio 8.1 on an up to date Edgy
box (latest updates 3-30-07), which already has java 6 bin, runtime, and
jdk installed.  When I run the install script, I keep getting this
message:
No compatible Java SE Runtime Environment (JRE) was found on this
system.

Does anyone know how I can tell the installer that I do have sun-java6
already installed and where the installer can find it?

Thanks. (I'm trying to set this up for classes for next week)