How do I convert a string into ASCII code?

[sky1256]

This is the text I want to convert:
Somewhere in la Mancha, in a place whose name I do not care to remember, a gentleman lived not long ago, one of those who has a lance and ancient shield on a shelf and keeps a skinny nag and a greyhound for racing.

Please help..

[bvdet]

What do you mean by "ASCII code"? All of the characters in your text are already ASCII.