Write/read Txt Files

I need to do something very basic in asp. What I want to do is have one page that has a text box, and a button... the user can type whatever in the text box, and click submit, and it will create a txt file. Every time the button is pushed it overwites the file...

Then on a seperate page, whenever the page is loaded, it reads from the file and posts it on the page..I think this is very basic, but I'm very new.... I need to write it in standard ASP. One other thing that would be helpful is to have a limit on the amount that the text box will hold.