Enterprise Manager :: Warning EM Won't Run After Default 64bit 11gR2 Install

I've inherited a 10.2 instance here in Kuwait and I'm attempting to migrate to a brand new server; I downloaded and attempted to install 11gR2 (11.2.0.1.0) on my brand new HP clean and patched server running Windows 2008 R2 Enterprise.

I've tried clean install, re-install, install software first then database, install all together, a complete default install (other than putting the database on a different drive letter)... every time I get the same error-

Enterprise manager configuration succeeded with the following warning -

Error starting database control. Please execute the following command(s)

1) Set the environment variable ORACLE_UNQNAME to database unique name

2) ...emctl start dbconsole

There is plenty about this on the internet, google, forums. Some suggest dropping and reconfig of EM; tried that. One error leads to another error and I think I'm getting close, then some other error, more obscure than the last. VERY FRUSTRATING!

- Is this distribution broken?

- Should I try the 32-bit or just install and run the 10.2 on my brand new 64-bit server (that kinda hurts my head but I bet it would work!)

I've tried numerous re-boots, several fresh clean installs (after using the Oracle uninstaller and cleaning out the registry and deleting old files), I've set every environmental variable that I can in the system variables section including ORACLE_HOSTNAME, ORACLE_SID and ORACLE_UNQNAME.

I've tried unlocking SYSTEM and SYSMAN user accounts, I've deconfig'd the EM and have recreated the repository, reconfig'd...

Database is installed and working find. SQL plus is working and fine. It's just EM that's broken and I... just... can't... fix... it.Web page for EM starts just fine... log in (oddly, won't let me log in as SYSDBA from the web) then throws this error:

Error Internal Error has occurred. Check the log file for details.

The log files are pages long and I'm not sure what I'm looking at.

- Install different distro (like the 32-bit 11g)

- Install 10.2 and get on with my life- maybe upgrade later

- Wait for a patch?