I am currently using Roxio MyDVD. I've created a root menu and one submenu. I've burnt it to a DVD -R. When I play it in my DVD Player I select Chapters and it brings me to my submenu. From there no button is selected and this makes navigation impossible. I've repeatedly pressed up, down, left, right and no button ever becomes highlighted. Help?

How did you create the chapters? You have supplied very little information.

They aren't exactly chapters. It's more of a Season DVD with different episodes of a home made show. The sub-menu has buttons for 4 different episodes and a home button. The four different buttons are all different videos. I've tried to use different templates, I've tried to set the default button to the first episode but nothing works.

If those are 4 different videos then they are not chapters but are titles and should all be on the main menu. Add each video separately and it will automatically become a Title button on the main menu page. No need fool around with sub-menus.
Chapters would only come into the picture if you want to sub-divide a video (Title) into segments; they would be like the "Select Scenes" you get on commercial movie DVDs

But i don't understand how this affects the DVD itself? Yes it would be much simpler but is there a solution other than that? when I put it in the DVD player and go to my submenu, no button is highlighted. Navigation is impossible... why?

Your thread is confusing. Do you have a menu and a submenu where there are buttons? If so, you did not select the option on how to highlight the buttons for navigation. The image shows the top menu but the submenu should have the same options: