I am experiencing a similar problem:

1) I upgraded from DNN 4.05.01 to DNN4.05.03.  That upgrade was not uneventful.  Two modules would not load:  Links and HTML/Text.

2) Login as Host and uninstalled the modules which were corrupted (I guess).

3) I reloaded Links and it works without a problem, but I cannot find HTML/Text as a project anymore.  So where do I get that module?

4) I tried FCKeditor and the installation of it errored out with cannot find .dll

Any ideas?

The HTML module is distributed as part of the DNN install package.  Just look in the Install/Modules directory in the zip package.

I DID find that module; however, I did NOT find it in the "DotNetNuke_04.05.03_Upgrade."  It IS in the "DotNetNuke_04.05.03_StarterKit."

Thank you so much.......  This is a MAJOR milestone for me. 

{I have a 4.05.03 site up and running with all the basic modules!  Now, I just have to figure out how to get the portals and content from my old site into the new site}