Most web editors have an option to insert html directly but may restrict what parts of your page that you can insert them in. The answer to your question therefore depends on which editor you have chosen to use. Of course if you have chosen an editor where you enter the html yourself rather than have it generated for you then you will type all of the html codes yourself. Bravenet supply a simple editor to allow people to create simple web pages and also allow you to run your own choice of editors on your own computer and then upload your pages from there.
I'm using bravenet, and I used their webstie wizard to start the page and now I'm going back through the html code trying to add background images into the tables. I haven't figured out how to add the background image onto a table in bravenet.
JimBb has created the definitive site for website wizard users - see the link above.
There is only so much you can do with the wizard, there may come a point where you need to use a different editor for something. If you do then you can't go back to the wizard as it may attempt to "correct" your code.
