[quote=Ian S]I just tried, but sqlplus.exe is not there; I guess the network admin didn't include that as part of the 11g home install. Verified with my coworker who is still on Vista / oracle 11g that he also does not have sqlplus.exe installed, but PL/SQL Develop is working correctly on his machine.

Thanks for your help [/quote]

Good Morning,
Just looking for an update. My issue doesn't seem to be related to 10g or folder names.

I was able to use Oracle SQL Developer tool with TNS lookup to successfully connect to the database.

Thanks,
Ian