Here's how to swap the Alt ＆ Ctrl keys, or make the Caps Lock into a Ctrl key, for Microsoft Windows.
; -*- coding: utf-8 -*- Ctrl::Alt Alt::Ctrl
See: AutoHotkey Tutorial ⌨
if you don't have time do learn AutoHotkey yourself, then send me it for $3, i'll send you the software that swaps the Alt ＆ Ctrl keys. Use the paypal button below. In the comment field, put “swap Alt and Ctrl”. I'll email you the download link. Make sure your email address is included and correct.
For general tools, see: Keyboard Layout ＆ Key Macro tools for Windows.