Windows 7 - Annoying problem alt codes not working mapping incorect

The alt code mapping on my pc is either wrong or nonexistent, only a small amount of letters show up as having an alt code. Others show nothing, even the ones that are standard don't have an alt code. I don't want to do this manually due to the fact that it would become extremely tedious. Is there any way I can remap the alt codes for my pc. I'm running win 7 home premium 64-bit.\

After some experimentation the alt codes seems to start working at 100 with lower case and works its way threw to 250 with some accents, fenetics and the basic symbols in between. To narrow a selection. Why doesn't the rest of them work.

What alt codes are you wanting to map, ASCII?

_
' ) _) /'
// _/~/' --/'--
/'/_/~ /' ____ ____ /' O ,____
/' /~ /' /' ) )' )--/' /' /' )
/' /' /' /' /' /' /' /' /'
(,/' (_,(___,/(__/' (__ (__/' /(__


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You don't get it. I know what numbers the codes fall under. Its the point that they just don't work. I can hit alt + what ever and nothing. Its supposed to be standard but the standard isn't there. I got less then that for who knows what reason.

First I was planning on getting the emotions 1-9. Then there were other symbols and letters that don't show up in mine. But for the sake of ease lets start there. If I can learn how to map these ones I should be able to map the others just fine.