finally got my adapter in the mail, could not get debian running on a cpu but have minicom v 1.83.1 running on dsl via apt, just not sure how to get it to work
I understand you have no idea how to get it to work, but I can't make sense out of your sentence. You can't install Debian ON a CPU, and what do you mean by having minicom running on dsl via apt? Ok, I guess you mean you can't install Debian, and you've installed minicom using apt-get.
This guide should get you started on how to configure minicom.
The guide lacks configuration for the Sun Netra T1, but it should be close enough. The manual from Sun should also give you more details about LOM. You need to connect a regular ethernet cable in your Serial A port (it doesn't look like a serial port, but simply like an ethernet port, and it should say 'A' over it). You need to connect the other end of the ethernet cable in your adapter, and then you connect your adapter to your computer's serial port. If you haven't changed permission on your serial port file (/dev/ttyS0, I assume) you will need to log in as root first, and then try to use it. Start minicom and configure it as shown in the guide I gave you the link. I you have multiple db9 (serial) ports, then it may not be /dev/ttyS0.
After configuration, if you can get a prompt like the one I posted in my previous post, then it has been configured correctly. From there you can try powering on your machine (poweron command) and then booting it (boot command). "help" gives you a list of all available commands.
This should also help you out. What about installing Solaris 10 instead?