Well, my dad asked me to do alittle project for him ...
he wants to do a software/site

To enter a few numbers.
Submit the numbers
save the numbers in some sort of file(text).

that is that
and lets say i entered "123456"
and i need to search something like "123"
and then all numbers starting with 123 will popup be it 123456, 123654 or 123546

I think using html + asp should do the work. Well, i have 0 knowledge of asp, and i know only 50% of html.
I am willing to learn, so which language do i use to make these ?

Hope some pro here would help me out