Mysql questions still

I have been struggling with getting mysql running on both SuSE 8.0 and SuSE 9.0. The manual at http://www.mysql.com/doc/en/index.html proved to be very helpful althouhg a bit confusing too. I found over 100 messages on that subject from this list and although they were somewhat helpful, there is one thing still missing. Mysql is running with a little tampering and I can access with -h localhost but not with -h myhost.com. This works mysqladmin -u root -h localhost version but this doesn't mysqladmin -u root -h 192.168.0.91 version but gives me an error saying that host "is not allowed to connect to this MySQL server" I don't find this issue in any of the documents that I found so far. Does anyone know why this happens? Damon Register