Hi So i am trying to make a program that registers and account on a website and i am having a few problems, first ill post my code:

Code:
WebBrowser1.Document.GetElementById("date_month").InnerText = ComboBox1.Text
        WebBrowser1.Document.GetElementById("date_day").InnerText = ComboBox2.Text
        WebBrowser1.Document.GetElementById("date_year").InnerText = TextBox1.Text
        WebBrowser1.Document.GetElementById("login").InnerText = TextBox2.Text
        WebBrowser1.Document.GetElementById("character_name").InnerText = TextBox3.Text
        WebBrowser1.Document.GetElementById("password").InnerText = TextBox4.Text
        WebBrowser1.Document.GetElementById("confirm").InnerText = TextBox5.Text
        WebBrowser1.Document.GetElementById("email").InnerText = TextBox6.Text
Here are my problems:

1. When i inpute the month, it doesnt input it, it just makes the combobox on the website smaller for some reason

2. I cant get the email working because you must put your birhtday before it shows where to put your email, obviously fixing the first problem should fix this.

3. There are 2 radiobuttons on the website, for a boy and a girl and I have 2 radiobuttons in my form, however I have exactly no idea how to program it to change.

Your help is greatly appreciated.