[chooka]

Hi all. I am very new to web development and am trying to create my first website which contains a questionnaire.
What i want to do is create a input field in a form which prompts for a six 6 character password. I want the password to have the first character in the set [0,1,2,3,4,5,6,7,8,9], the next character to be an uppercase alphabetic, the next three characters to be alphanumeric and the final character to be an uppercase character.
I have read through a heap of posts and javascript/HTML books to find the answer but dont really know what would help me.
Thanx heaps guys.