Hey,
HTML has a couple of sttributes available to make controls uneditable. You can eitther make them read-only, or disable them.
<input type="text" name="address" value="123th First Street" readonly="readonly" />
Or to disable the textbox :
<input type="text" name="address" value="123th First Street" disabled="disabled" />
For myself, i like to disabled controls in stead of making them read-only because the difference is more obvious on various devices, but ofcourse this choise is yours.
Good luck!