Let me start with the fact that I am new to WP.
I have installed 3 copies of WP to support 3 separate blogs. Each is installed in a separate directory under the root with obviously diff. names for each. I am hosting at godaddy.com. The blog installed 1st and assigned to the primary domain is working fine/no issues. I have modified the General Setting and copied and modified the index.php file to the root so it is the default content for the primary domain.
The other 2 blogs do not seem to load properly (no background loads, only HTML) and when I try and access Admin Screens I get a 404 error from Apache and not the WP 404 message. The 2 affected domain names have their root set to the individual WP directory for each rather than the root. I have tried coming in at the primary domain name (priblogdomainname.com/wordpressxxx/wp-admin) and referencing the directory for each directly as well as using the individual blog names with the directory specified (blog2domainname.com/wordpressxxx/wp-admin). No luck.