Trouble with form

My form is located here: contact100.php

I can't figure out how to get rid of the required validation for the State, Resume Upload, Best day and Best Times.

Also, I have tried to add radio buttons to the form but the only option I have seen is to add a Radio Group and inside that you can add fields, but I never get buttons, nor do I see an option to add buttons. I have searched your site for documentation and sad to say it's woefully inadequate. I can add them with hand coding thru dreamweaver, but the way you do your form is not familiar to me and I keep messing it up rather than getting the buttons I want. Can someone please help with these two issues???? Also, is there a way to change the amount of letters in the captcha? Oh... sorry, one more thing, I have looked around for some explanation as to how I can add form validation too so only certain file types will be accepted, but haven't been able to find that either... sorry to be such a pain. I've spent 3 days trying to get this one form done....