Links to subsidiary site on bluehost

it should be able to do it
are you doing the add on redirect correctly
maybe look at the bluehost faq’s for add on domains

I am not clear what you mean by “doing the add on redirect correctly” – systalk.org is hosted by bluehost using the account for solbakkn.com, the primary domain for the account. The standard way that bluehost sets up things is to make a secondary site available both as primary.com/secondary and as secondary.com .

I used bluehost’s automatic software installation to get word press running. It seems to me the difficulty is on the Word Press side of things, not at bluehost. Do I have this wrong?

Try logging into your WordPress and, in the Settings, make sure that the blog URL and WordPress URL are both domain.org, and not otherdomain.com/domain.
For links which have already been made at otherdomain.com/domain, you may need to use a find and replace plugin to fix those. Also, try changing your permalink structure, then changing it back again.

Bernard,
Will try your suggestions this evening. Not sure about your comment about “links which have already been made at otherdomain.com/domain” as otherdomain.com/domain and domain.org are, from the server’s standpoint, the same set of files with two ways to get to them.