Hi All, thanks so much for helping with this.
Tried all suggestions but to no avail. (I am assuming administering using wordpress.org looks different to wordpress.com - maybe I'm wrong)
I set my URL mapping to BlueHost, rather than to wordpress.com - my Primary NS as 18.104.22.168, ns1.bluehost.com and my Secondary NS1 as 22.214.171.124, ns2.bluehost.com. IS THIS CORRECT?
To be certain, I removed WordPress from My Installs at BlueHost (through SimpleScripts), tested accessing my site - worked fine; tested logging into my site using my normal wordpress.com username and editing - worked fine.
I then logged out of wordpress.com, and re-installed WordPress 3.0.1 using SimpleScripts in BlueHost to my web site (http://ecology.edu.au) - All good.
Received the following message confirming WordPress 3.0.1 install:
Site URL: http://ecology.edu.au
Login URL: http://ecology.edu.au/wp-admin
Immediately clicked on the Login URL above, using the sign-on and password above (both typed and copied), but was told they were incorrect. Noted that the login screen was still going to wordpress.com.
I've tried obvious things like refreshing screens, logging right out of things and back in etc.
Apologies for being so dumb about this! There appears to be a hook somewhere that is not correct, but I cannot work out where.