I have an import module that I'm working on, which accesses a database to retrieve and import pages into DotNetNuke.

It isn't very complex; It just needs to create an HTML module in the new page and set the content to the string pulled from the Database.

I have the page being created correctly, along with the HTML module being added to the page in the following code;

 ModuleController MC = new ModuleController();
                ModuleInfo miHTML = new ModuleInfo();
                miHTML.TabID = newTab.TabID;
                miHTML.ModuleTitle = "HTML Content";
                miHTML.PaneName = "ContentPane";
                miHTML.ModuleDefID = 119;
               
                MC.AddModule(miHTML);

But I have no clue as to how I should edit the content of that module.

I would have searched previous threads for the answer, but the search function seems to be broken;

Any help anyone can offer will be appreciated.

I suggest having a look into the module development tutorials from Michael Washington at dotnetnuke.adefwebserver.com.