I broke my laptop and had to buy a new one with a new keyboard that I am struggling to get familiar with, especially with the keys like home, page-up, page-down and end, which aren't standardized at all.

I found myself doing this for like the 5th time in the last several years, and I think it is really annoying.

Is there an app that can reliably map one key to another? By reliably I mean that key mapping works with Shift, Alt, and other modifiers.

UPDATE

Windows 7, Samsung Chronos 7